Which of these African cultures migrated throughout Africa bringing their culture, language, and beliefs to new areas and ultimately driving out or assimilated people they encountered?

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