Answer:
Technology during World War I (1914–1918) reflected a trend toward industrialism and the application of mass-production methods to weapons and to the technology of warfare in general. This trend began at least fifty years prior to World War I during the American Civil War of 1861–1865,[1] and continued through many smaller conflicts in which soldiers and strategists tested new weapons.
Explanation:
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It was organized with seperation of powers.
The factors that caused the Great Depression to spread around the world are:
Americans stopped buying from overseas nations
Many countries raised tariffs on imported goods
Americans demanded repayment of European loans
The Great Depression was the worst economic downturn in the history of the industrialized world, protracting from 1929 to 1939. It began following the crash of the stock market of October 1929, which sent Wall Street into a panic and wiped out millions of investors.
Prior the Great Depression, the Federal Reserve had caused banks to decrease their willingness to loan money to the people. the stock market also declined at the time before
Correct answer: The end of World War II.
European nations had established colonial empires in Africa in the late 19th and early 20th century. Coming out of World War II, those European nations lacked the resources and energy to maintain far-away empires in Africa and Asia (as well as the ability to suppress revolutions there). Plus they were now aligning themselves with either the USA or the USSR in the new Cold War world that was taking shape.
Additional factors: Coming out of the period of the World Wars, there was a prevailing attitude among the Allies that people should be allowed self-determination of their nations and governments. In other words, they were leaving behind attitudes favoring colonialism and imperialism, believing all nations should be able to determine their own destinies. Coupled with that were rising nationalistic attitudes in African nations that had been dominated by European imperialism. Those factors, along with the economic realities in Europe, started the trend toward decolonization.