Subjects
Maths
Chemistry
Biology
English Language
History
Responding to change (a2 only)
Infection and response
Homeostasis and response
Energy transfers (a2 only)
Cell biology
Organisms respond to changes in their internal and external environments (a-level only)
Biological molecules
Organisation
Substance exchange
Bioenergetics
Genetic information & variation
Inheritance, variation and evolution
Genetics & ecosystems (a2 only)
Ecology
Cells
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Britain & the wider world: 1745 -1901
1l the quest for political stability: germany, 1871-1991
The cold war
Inter-war germany
Medieval period: 1066 -1509
2d religious conflict and the church in england, c1529-c1570
2o democracy and nazism: germany, 1918-1945
1f industrialisation and the people: britain, c1783-1885
1c the tudors: england, 1485-1603
2m wars and welfare: britain in transition, 1906-1957
World war two & the holocaust
2n revolution and dictatorship: russia, 1917-1953
2s the making of modern britain, 1951-2007
World war one
Britain: 1509 -1745
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History
13 Dec 2025
222
5 pages
Siena Becker @sienalizbkr
World War I erupted due to a complex mix of long-term tensions and immediate triggers that engulfed Europe... Show more
Ever wondered how the world stumbled into its first truly global war? Four powerful forces were brewing trouble long before the fighting started. Militarism created an environment where European powers constantly expanded their armies in a dangerous competition for superiority. Countries like Britain, France, and Germany poured massive amounts of money into building bigger armies and more advanced weapons.
Nationalism fueled extreme pride in one's country and willingness to fight and die for it. Young men were bombarded with propaganda portraying war as an exciting adventure to share with friends. This patriotic fever made European powers eager to demonstrate their dominance, even if it meant risking war.
Imperialism pushed countries to compete fiercely for colonies, land, and raw materials around the world. As nations like Britain and France built massive empires, tensions between European powers intensified over who controlled what territories.
Think about it How might today's nationalism and military competition between countries create similar dangers to those that existed before WWI?
Imagine choosing teams for a playground game, but with deadly consequences. By 1914, Europe had divided into two powerful alliance systems the Triple Alliance and the Triple Entente (France, Britain, and Russia). These alliances meant that a conflict between two nations could quickly pull in many others.
When Austria-Hungary threatened Serbia after the assassination of Franz Ferdinand, Russia (allied with Serbia) felt compelled to support its ally. This triggered a chain reaction as other countries were drawn in by their alliance commitments. Austria-Hungary issued ultimatums to Serbia that were deliberately difficult to accept in full.
When Serbia's response didn't completely satisfy Austria-Hungary's demands, war was declared on July 28, 1914. The alliance system that was designed to prevent war instead ensured that a local conflict would expand rapidly across the continent.
Important The alliance system was like a row of dominoes – once one country declared war, others felt obligated to follow, turning a regional dispute into a global catastrophe.
Nationalism wasn't just about flag-waving – it created a dangerous environment where countries became willing to risk everything. European powers competed intensely to demonstrate their superiority, with citizens ready to sacrifice for national glory. This competitive nationalism acted as a destabilizing force that made compromise increasingly difficult.
Meanwhile, imperial ambitions further heightened tensions. European powers scrambled to build global empires, seeing colonies as proof of national greatness. This competition for colonies, resources, and markets created friction points across the globe. Britain's vast empire (including Canada, India, New Zealand, and Hong Kong) made other European nations jealous and determined to build their own colonial holdings.
The combination of fierce nationalism and imperial rivalry created a combustible atmosphere. Countries became increasingly willing to use military force to protect their interests and expand their influence, setting the stage for a devastating conflict.
Remember The drive for colonies wasn't just about resources – it was deeply connected to national pride and international status, making countries less likely to back down when conflicts arose.
The assassination of Archduke Franz Ferdinand in Sarajevo by the Black Hand Gang provided the spark that ignited the war. This single event activated all the underlying tensions that had been building for decades. Though seemingly a local incident, it quickly escalated because of the alliance systems and existing tensions.
Kaiser Wilhelm II of Germany had been pursuing aggressive policies for years, expanding Germany's colonial holdings and building up its navy. When the crisis erupted, Germany implemented the Schlieffen Plan – a military strategy designed by General Alfred von Schlieffen to avoid fighting a two-front war. This plan called for quickly defeating France by invading through neutral Belgium before turning to fight Russia.
Germany's violation of Belgium's neutrality brought Britain into the war, as Britain had guaranteed Belgium's independence. Schlieffen had hoped Britain would stay out of a continental war, but his plan actually ensured Britain's involvement – a critical miscalculation that expanded the conflict further.
Critical point The Schlieffen Plan shows how military planning can lock countries into dangerous courses of action. Once mobilization began, the complex timetables of troop movements made it nearly impossible to stop the march to war.
Our AI Companion is a student-focused AI tool that offers more than just answers. Built on millions of Knowunity resources, it provides relevant information, personalised study plans, quizzes, and content directly in the chat, adapting to your individual learning journey.
You can download the app from Google Play Store and Apple App Store.
That's right! Enjoy free access to study content, connect with fellow students, and get instant help – all at your fingertips.
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The app is very easy to use and well designed. I have found everything I was looking for so far and have been able to learn a lot from the presentations! I will definitely use the app for a class assignment! And of course it also helps a lot as an inspiration.
Stefan S
iOS user
This app is really great. There are so many study notes and help [...]. My problem subject is French, for example, and the app has so many options for help. Thanks to this app, I have improved my French. I would recommend it to anyone.
Samantha Klich
Android user
Wow, I am really amazed. I just tried the app because I've seen it advertised many times and was absolutely stunned. This app is THE HELP you want for school and above all, it offers so many things, such as workouts and fact sheets, which have been VERY helpful to me personally.
Anna
iOS user
Best app on earth! no words because it’s too good
Thomas R
iOS user
Just amazing. Let's me revise 10x better, this app is a quick 10/10. I highly recommend it to anyone. I can watch and search for notes. I can save them in the subject folder. I can revise it any time when I come back. If you haven't tried this app, you're really missing out.
Basil
Android user
This app has made me feel so much more confident in my exam prep, not only through boosting my own self confidence through the features that allow you to connect with others and feel less alone, but also through the way the app itself is centred around making you feel better. It is easy to navigate, fun to use, and helpful to anyone struggling in absolutely any way.
David K
iOS user
The app's just great! All I have to do is enter the topic in the search bar and I get the response real fast. I don't have to watch 10 YouTube videos to understand something, so I'm saving my time. Highly recommended!
Sudenaz Ocak
Android user
In school I was really bad at maths but thanks to the app, I am doing better now. I am so grateful that you made the app.
Greenlight Bonnie
Android user
very reliable app to help and grow your ideas of Maths, English and other related topics in your works. please use this app if your struggling in areas, this app is key for that. wish I'd of done a review before. and it's also free so don't worry about that.
Rohan U
Android user
I know a lot of apps use fake accounts to boost their reviews but this app deserves it all. Originally I was getting 4 in my English exams and this time I got a grade 7. I didn’t even know about this app three days until the exam and it has helped A LOT. Please actually trust me and use it as I’m sure you too will see developments.
Xander S
iOS user
THE QUIZES AND FLASHCARDS ARE SO USEFUL AND I LOVE THE SCHOOLGPT. IT ALSO IS LITREALLY LIKE CHATGPT BUT SMARTER!! HELPED ME WITH MY MASCARA PROBLEMS TOO!! AS WELL AS MY REAL SUBJECTS ! DUHHH 😍😁😲🤑💗✨🎀😮
Elisha
iOS user
This apps acc the goat. I find revision so boring but this app makes it so easy to organize it all and then you can ask the freeeee ai to test yourself so good and you can easily upload your own stuff. highly recommend as someone taking mocks now
Paul T
iOS user
The app is very easy to use and well designed. I have found everything I was looking for so far and have been able to learn a lot from the presentations! I will definitely use the app for a class assignment! And of course it also helps a lot as an inspiration.
Stefan S
iOS user
This app is really great. There are so many study notes and help [...]. My problem subject is French, for example, and the app has so many options for help. Thanks to this app, I have improved my French. I would recommend it to anyone.
Samantha Klich
Android user
Wow, I am really amazed. I just tried the app because I've seen it advertised many times and was absolutely stunned. This app is THE HELP you want for school and above all, it offers so many things, such as workouts and fact sheets, which have been VERY helpful to me personally.
Anna
iOS user
Best app on earth! no words because it’s too good
Thomas R
iOS user
Just amazing. Let's me revise 10x better, this app is a quick 10/10. I highly recommend it to anyone. I can watch and search for notes. I can save them in the subject folder. I can revise it any time when I come back. If you haven't tried this app, you're really missing out.
Basil
Android user
This app has made me feel so much more confident in my exam prep, not only through boosting my own self confidence through the features that allow you to connect with others and feel less alone, but also through the way the app itself is centred around making you feel better. It is easy to navigate, fun to use, and helpful to anyone struggling in absolutely any way.
David K
iOS user
The app's just great! All I have to do is enter the topic in the search bar and I get the response real fast. I don't have to watch 10 YouTube videos to understand something, so I'm saving my time. Highly recommended!
Sudenaz Ocak
Android user
In school I was really bad at maths but thanks to the app, I am doing better now. I am so grateful that you made the app.
Greenlight Bonnie
Android user
very reliable app to help and grow your ideas of Maths, English and other related topics in your works. please use this app if your struggling in areas, this app is key for that. wish I'd of done a review before. and it's also free so don't worry about that.
Rohan U
Android user
I know a lot of apps use fake accounts to boost their reviews but this app deserves it all. Originally I was getting 4 in my English exams and this time I got a grade 7. I didn’t even know about this app three days until the exam and it has helped A LOT. Please actually trust me and use it as I’m sure you too will see developments.
Xander S
iOS user
THE QUIZES AND FLASHCARDS ARE SO USEFUL AND I LOVE THE SCHOOLGPT. IT ALSO IS LITREALLY LIKE CHATGPT BUT SMARTER!! HELPED ME WITH MY MASCARA PROBLEMS TOO!! AS WELL AS MY REAL SUBJECTS ! DUHHH 😍😁😲🤑💗✨🎀😮
Elisha
iOS user
This apps acc the goat. I find revision so boring but this app makes it so easy to organize it all and then you can ask the freeeee ai to test yourself so good and you can easily upload your own stuff. highly recommend as someone taking mocks now
Paul T
iOS user
Siena Becker
@sienalizbkr
World War I erupted due to a complex mix of long-term tensions and immediate triggers that engulfed Europe in 1914. Understanding these causes helps us see how a single assassination could ignite a global conflict that changed history forever.
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Ever wondered how the world stumbled into its first truly global war? Four powerful forces were brewing trouble long before the fighting started. Militarism created an environment where European powers constantly expanded their armies in a dangerous competition for superiority. Countries like Britain, France, and Germany poured massive amounts of money into building bigger armies and more advanced weapons.
Nationalism fueled extreme pride in one's country and willingness to fight and die for it. Young men were bombarded with propaganda portraying war as an exciting adventure to share with friends. This patriotic fever made European powers eager to demonstrate their dominance, even if it meant risking war.
Imperialism pushed countries to compete fiercely for colonies, land, and raw materials around the world. As nations like Britain and France built massive empires, tensions between European powers intensified over who controlled what territories.
Think about it: How might today's nationalism and military competition between countries create similar dangers to those that existed before WWI?
Access to all documents
Improve your grades
Join milions of students
By signing up you accept Terms of Service and Privacy Policy
Imagine choosing teams for a playground game, but with deadly consequences. By 1914, Europe had divided into two powerful alliance systems: the Triple Alliance and the Triple Entente (France, Britain, and Russia). These alliances meant that a conflict between two nations could quickly pull in many others.
When Austria-Hungary threatened Serbia after the assassination of Franz Ferdinand, Russia (allied with Serbia) felt compelled to support its ally. This triggered a chain reaction as other countries were drawn in by their alliance commitments. Austria-Hungary issued ultimatums to Serbia that were deliberately difficult to accept in full.
When Serbia's response didn't completely satisfy Austria-Hungary's demands, war was declared on July 28, 1914. The alliance system that was designed to prevent war instead ensured that a local conflict would expand rapidly across the continent.
Important: The alliance system was like a row of dominoes – once one country declared war, others felt obligated to follow, turning a regional dispute into a global catastrophe.
Access to all documents
Improve your grades
Join milions of students
By signing up you accept Terms of Service and Privacy Policy
Nationalism wasn't just about flag-waving – it created a dangerous environment where countries became willing to risk everything. European powers competed intensely to demonstrate their superiority, with citizens ready to sacrifice for national glory. This competitive nationalism acted as a destabilizing force that made compromise increasingly difficult.
Meanwhile, imperial ambitions further heightened tensions. European powers scrambled to build global empires, seeing colonies as proof of national greatness. This competition for colonies, resources, and markets created friction points across the globe. Britain's vast empire (including Canada, India, New Zealand, and Hong Kong) made other European nations jealous and determined to build their own colonial holdings.
The combination of fierce nationalism and imperial rivalry created a combustible atmosphere. Countries became increasingly willing to use military force to protect their interests and expand their influence, setting the stage for a devastating conflict.
Remember: The drive for colonies wasn't just about resources – it was deeply connected to national pride and international status, making countries less likely to back down when conflicts arose.
Access to all documents
Improve your grades
Join milions of students
By signing up you accept Terms of Service and Privacy Policy
The assassination of Archduke Franz Ferdinand in Sarajevo by the Black Hand Gang provided the spark that ignited the war. This single event activated all the underlying tensions that had been building for decades. Though seemingly a local incident, it quickly escalated because of the alliance systems and existing tensions.
Kaiser Wilhelm II of Germany had been pursuing aggressive policies for years, expanding Germany's colonial holdings and building up its navy. When the crisis erupted, Germany implemented the Schlieffen Plan – a military strategy designed by General Alfred von Schlieffen to avoid fighting a two-front war. This plan called for quickly defeating France by invading through neutral Belgium before turning to fight Russia.
Germany's violation of Belgium's neutrality brought Britain into the war, as Britain had guaranteed Belgium's independence. Schlieffen had hoped Britain would stay out of a continental war, but his plan actually ensured Britain's involvement – a critical miscalculation that expanded the conflict further.
Critical point: The Schlieffen Plan shows how military planning can lock countries into dangerous courses of action. Once mobilization began, the complex timetables of troop movements made it nearly impossible to stop the march to war.
Access to all documents
Improve your grades
Join milions of students
By signing up you accept Terms of Service and Privacy Policy
Our AI Companion is a student-focused AI tool that offers more than just answers. Built on millions of Knowunity resources, it provides relevant information, personalised study plans, quizzes, and content directly in the chat, adapting to your individual learning journey.
You can download the app from Google Play Store and Apple App Store.
That's right! Enjoy free access to study content, connect with fellow students, and get instant help – all at your fingertips.
15
Smart Tools NEW
Transform this note into: ✓ 50+ Practice Questions ✓ Interactive Flashcards ✓ Full Mock Exam ✓ Essay Outlines
App Store
Google Play
The app is very easy to use and well designed. I have found everything I was looking for so far and have been able to learn a lot from the presentations! I will definitely use the app for a class assignment! And of course it also helps a lot as an inspiration.
Stefan S
iOS user
This app is really great. There are so many study notes and help [...]. My problem subject is French, for example, and the app has so many options for help. Thanks to this app, I have improved my French. I would recommend it to anyone.
Samantha Klich
Android user
Wow, I am really amazed. I just tried the app because I've seen it advertised many times and was absolutely stunned. This app is THE HELP you want for school and above all, it offers so many things, such as workouts and fact sheets, which have been VERY helpful to me personally.
Anna
iOS user
Best app on earth! no words because it’s too good
Thomas R
iOS user
Just amazing. Let's me revise 10x better, this app is a quick 10/10. I highly recommend it to anyone. I can watch and search for notes. I can save them in the subject folder. I can revise it any time when I come back. If you haven't tried this app, you're really missing out.
Basil
Android user
This app has made me feel so much more confident in my exam prep, not only through boosting my own self confidence through the features that allow you to connect with others and feel less alone, but also through the way the app itself is centred around making you feel better. It is easy to navigate, fun to use, and helpful to anyone struggling in absolutely any way.
David K
iOS user
The app's just great! All I have to do is enter the topic in the search bar and I get the response real fast. I don't have to watch 10 YouTube videos to understand something, so I'm saving my time. Highly recommended!
Sudenaz Ocak
Android user
In school I was really bad at maths but thanks to the app, I am doing better now. I am so grateful that you made the app.
Greenlight Bonnie
Android user
very reliable app to help and grow your ideas of Maths, English and other related topics in your works. please use this app if your struggling in areas, this app is key for that. wish I'd of done a review before. and it's also free so don't worry about that.
Rohan U
Android user
I know a lot of apps use fake accounts to boost their reviews but this app deserves it all. Originally I was getting 4 in my English exams and this time I got a grade 7. I didn’t even know about this app three days until the exam and it has helped A LOT. Please actually trust me and use it as I’m sure you too will see developments.
Xander S
iOS user
THE QUIZES AND FLASHCARDS ARE SO USEFUL AND I LOVE THE SCHOOLGPT. IT ALSO IS LITREALLY LIKE CHATGPT BUT SMARTER!! HELPED ME WITH MY MASCARA PROBLEMS TOO!! AS WELL AS MY REAL SUBJECTS ! DUHHH 😍😁😲🤑💗✨🎀😮
Elisha
iOS user
This apps acc the goat. I find revision so boring but this app makes it so easy to organize it all and then you can ask the freeeee ai to test yourself so good and you can easily upload your own stuff. highly recommend as someone taking mocks now
Paul T
iOS user
The app is very easy to use and well designed. I have found everything I was looking for so far and have been able to learn a lot from the presentations! I will definitely use the app for a class assignment! And of course it also helps a lot as an inspiration.
Stefan S
iOS user
This app is really great. There are so many study notes and help [...]. My problem subject is French, for example, and the app has so many options for help. Thanks to this app, I have improved my French. I would recommend it to anyone.
Samantha Klich
Android user
Wow, I am really amazed. I just tried the app because I've seen it advertised many times and was absolutely stunned. This app is THE HELP you want for school and above all, it offers so many things, such as workouts and fact sheets, which have been VERY helpful to me personally.
Anna
iOS user
Best app on earth! no words because it’s too good
Thomas R
iOS user
Just amazing. Let's me revise 10x better, this app is a quick 10/10. I highly recommend it to anyone. I can watch and search for notes. I can save them in the subject folder. I can revise it any time when I come back. If you haven't tried this app, you're really missing out.
Basil
Android user
This app has made me feel so much more confident in my exam prep, not only through boosting my own self confidence through the features that allow you to connect with others and feel less alone, but also through the way the app itself is centred around making you feel better. It is easy to navigate, fun to use, and helpful to anyone struggling in absolutely any way.
David K
iOS user
The app's just great! All I have to do is enter the topic in the search bar and I get the response real fast. I don't have to watch 10 YouTube videos to understand something, so I'm saving my time. Highly recommended!
Sudenaz Ocak
Android user
In school I was really bad at maths but thanks to the app, I am doing better now. I am so grateful that you made the app.
Greenlight Bonnie
Android user
very reliable app to help and grow your ideas of Maths, English and other related topics in your works. please use this app if your struggling in areas, this app is key for that. wish I'd of done a review before. and it's also free so don't worry about that.
Rohan U
Android user
I know a lot of apps use fake accounts to boost their reviews but this app deserves it all. Originally I was getting 4 in my English exams and this time I got a grade 7. I didn’t even know about this app three days until the exam and it has helped A LOT. Please actually trust me and use it as I’m sure you too will see developments.
Xander S
iOS user
THE QUIZES AND FLASHCARDS ARE SO USEFUL AND I LOVE THE SCHOOLGPT. IT ALSO IS LITREALLY LIKE CHATGPT BUT SMARTER!! HELPED ME WITH MY MASCARA PROBLEMS TOO!! AS WELL AS MY REAL SUBJECTS ! DUHHH 😍😁😲🤑💗✨🎀😮
Elisha
iOS user
This apps acc the goat. I find revision so boring but this app makes it so easy to organize it all and then you can ask the freeeee ai to test yourself so good and you can easily upload your own stuff. highly recommend as someone taking mocks now
Paul T
iOS user
Sociology