What were the causes of WW1 and WW2?

Popular answers: Assassination of Archduke Franz Ferdinand (1914) - World War I Invasion of Poland (1939) - World War II Actual Answers: War breaks out during a period of peace when- 1. read more

Russians sided with Serbia, and a war that could have been a Austro-Hungary v/s Serbia became WWI; World War II. WWI lead to many events in European history, majorly: Great Depression of 1929, Success of Communism in the Soviet Union and most importantly, the Treaty of Versailles. read more

The First World War (WWI) was fought from 1914 to 1918 and the Second World War (or WWII) was fought from 1939 to 1945. They were the largest military conflicts in human history. Both wars involved military alliances between different groups of countries. read more

World War I occurred between July 1914 and November 11, 1918. By the end of the war, over 17 million people had been killed, including over 100,000 American troops. While the causes of the war are infinitely more complicated than a simple timeline of events, and are still debated and discussed to this day, the list below provides an overview of the most frequently-cited events that led to war. read more