Which country changed sides about a year after world war 1 began and joined the allies

Which of the following best describes the relationship between the united states and south korea today?

What was the most common destination for african american migrants between 1910 and 1930

In the 1950s, the u.s. government encouraged american jazz musicians to perform in the soviet union, which was an enemy of the u.s. at the time. of what foreign policy goal is this a good example? strengthening world economic growth improving education for the global population advancing the growth of democracy and good government increasing understanding of american values and creating a receptive international environment