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+# Unit 1 Review
+- I know, we have had alot of review sheets already, but I hope this one will be more complete than the others.
+- This one follows the review doc by Ms weatherall
+
+## Causes of WW1
+
+There are 4 things (the MAIN) causes you need to understand why/how WW1 happened
+
+First is `militarism`: the so called arms race. In essence, two nations compete with each other about military technology, who has the best weapons, quantity, etc.
+- eg. US makes atomic bomb, Russia does the same
+- Basically who has the better army
+- This can lead to war, or at least put tension on each other because if someone wins, they can easily oblierate the other in a future war.
+- This race, as explained above, is driven by the `fear` of the other country becoming dominant and having military superiority.
+
+Second is `Alliance`. The mentality is that well, if we are equal in terms of individual strength, then I guess the side with my support wins. Even if countries of
+the same military strength, a side with more countries backing it up, will definetly have a huge advantage. (Strength in numbers). Or maybe the country has weak military power, but has someone with strong military power backign them up. (Similar to how the Austrians got backed up by the Germans).
+
+There were some Alliances made during/before WW1:
+
+`Triple Entente`: Consists of Great Britain, France, and Russia.
+
+`Triple Alliance`: Germany, Italy, and Austria-Hungary.
+
+Similar to the arms race, once a country has a powerful enough force (either from arms or alliance), they can declare war on weaker countries and take them over, similar to the next point, imperalism.
+
+
+Imperialism is pretty simple. A country expands and takes over other countries to become more powerful. 
+- War can happen when countries try to prevent this from happening, or when competeting for territory if they also want to take over.
+
+Nationalism:
+