Many countries wanted to control over many economic activities in other countries as well as utilize other countries for cheap labor. In addition, some countries wanted to explore the world and conquer for their homeland while other countries thought that their own country and race was superior to all other countries and therefore believed it was needed that they invade other countries and educate them as well as some countries practicing imperialism to convert people to their religion.
The act of 1776- (pouring the tea in the sea I believe)
The 1920s were a unique time in the United States in the sense that it was a time of great economic prosperity and also great social woe. What led to this tension was a mix of rising immigration levels and and irresponsible attitude towards money and spending.
Answer:
European nations were rival and they also wanted to get colonies to gain an advantage over their rivals plus it was a sign of prestige and power