World War One was a very brutal battle for many countries, but no war is ever fought without cause and effect leading up to it. The most significant causes of this war are Imperialism, Nationalism, and the assassination of Archduke Ferdinand. These three things may not seem quite worth going to over on their own, but these are some of the main things that built up tensity between countries over time until they just finally snapped. Imperialism is when a country wants more land and power to make an empire out of. All countries typically have some sense of wanting more land because more land typically meant more power and power is something all countries strive for and will take by any means necessary.Around the time before World War