1. think more about the four main causes of World War I. Which cause do you think had the biggest impact on starting the war? Which one had the least impact? In the space provided, rank the causes from one to four in a list. Number one should be the cause that had the biggest impact. Number four should be the cause you think was had the least impact. Feel free to look back through the lessons in this unit or research the topic on the Internet to help you with your ranking?
2. justify your ranking from part B of this task. Briefly make an argument for why you think one cause had a bigger impact than the other causes. You answer should be about 100 to 150 words long and include evidence to support your argument. The evidence can come from the lessons in this unit or from outside sources. Be sure to list the sources that you used to support your answer.

Imperialism is the most important because for many decades before World War I, the major European powers competed for overseas territories. This rivalry sometimes threatened to erupt into armed conflict. Next is militarism because throughout the 1800s and early 1900s, militarism was common in Europe, especially in Germany and Britain. Many countries spent large sums of money to build their armies and acquire military equipment. The third in line is the alliance system and the reason I know is because many countries signed agreements that they would help each other fight when the time arose, or they verified their neutrality. The least important is nationalism because although nationalism united people in a region together and created nation-states, it also created tensions and rivalries between countries. One rivalry was between Germany and France. These weren't so important as imperialism of course, because tension is not quite as serious as competing with other countries for overseas territories.

Explanation: Hope this helps!! Have a good day!!