What were the main and most important political causes of World War 1?
What situations led to World War 1?
What started World War 2? What important events happened in World War 2? When did World War One start? What was the reason behind World War II? How did World War Two start? Why did World War II happen? Why World War 2 start and how? What were the impacts of World War 2 in Europe? Who started World War 2 and why? What started World War II? What was the real cause of World War 2? Why did Russia, Germany, France and UK enter World War 1? How were the World War 1 battle tactics? Which was the most powerful country in world war 1? Who won World War 1? Who started World War I and World War II? What was World War II about? If World war 3 happened, what countries would likely start the war and why? When did world war 2 end? What was World War II? What are three of the most significant causes of World War II? Why did the U.S. become involved in World War II? Why did World Wars I and II happen? How would one describe World War 2? Why is World War 2 called "World" War 2 if it didn't affect the whole world? What are the untold and strange stories of World War 2? Did World War 3 already start? Did world war 1 and 2 involve China? Which countries were involved in World War II? Why did Japan enter World War I? What is stalemate in World War 1's history?