The main event that led the United State to take a more active role in the world affairs was World War II, since the US emerged from this war an economic superpower. It was also clear that some nation needed to "fill the void" left by the relative fall of the British Empire.
Answer:
The just-concluded World War II in September 1945
Explanation:
Following the end of World War II in 194 6, in which war veterans went to the home countries. There were series of unemployment across the world.
This is as a result of the destruction of many things, including factories, and houses, offices, human lives, and others.
Also, as a result of war debts and war veterans taking back their jobs all triggered a rapid rise in the unemployment rate in 1946?
A Mercator...............
Woodrow Wilson and Secretary of State William Jennings Bryan came into office with little experience in foreign relations but with a determination to base their policy on moral principles rather than the selfish materialism that they believed had animated their predecessors' programs. Convinced that democracy was gaining strength throughout the world, they were eager to encourage the process. In 1916, the Democratic-controlled Congress promised the residents of the Philippine Islands independence; the next year, Puerto Rico achieved territorial status, and its residents became U.S. citizens. Working closely with Secretary of State Bryan, Wilson signed twenty-two bilateral treaties which agreed to cooling-off periods and outside fact-finding commissions as alternatives to war.
In a statement issued soon after taking office, Wilson declared that the United States hoped “to cultivate the friendship and deserve the confidence” of the Latin American states, but he also emphasized that he believed “just government” must rest “upon the consent of the governed.” Latin American states were hopeful for the prospect of being free to conduct their own affairs without American interference, but Wilson's insistence that their governments be democratic undermined the promise of self-determination. In 1915, Wilson responded to chronic revolution in Haiti by sending in American marines to restore order, and he did the same in the Dominican Republic in 1916. The military occupations that followed failed to create the democratic states that were their stated objective. In 1916, Wilson practiced an old-fashioned form of imperialism by buying the Virgin Islands from their colonial master, Denmark, for $25 million.
Perceptual regions reflect the cultural identity of the people in the region.
The Big Apple (New York City), the Midwest, the South, and New England are other examples of perceptual regions in the United States.
(Hope this helps!!)