The population of America is ethnically heterogeneous. What does this mean?

A. Most Americans are immigrants themselves.

B. Most Americans come from similar ethnic backgrounds.

C. Most Americans speak English

D. Most Americans come from a variety of ethnic backgrounds.

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