After World War 1, the need for an international body of nations that promotes security and peace worldwide became evident. This caused the founding of the League of Nations. World War 1 boosted research in technology, because better transport and means of communication gave countries an advantage over their enemies.

Can you pass a world history test? Put on your thinking caps and tackle a challenge devoted to general knowledge that covers history from ancient times through the latest century. 1: American involvement in World War I brought about which of the following social and economic changes in the United States?: extensive black migration to the North. decline of trade unions. a loosening of controls on freedom of speech. reduction of the number of women in the workplace. a strengthening of anti-trust laws.