What are the "advantages" for the slave owner to have mixed race children?

Which of the following inventions most directly allowed ancient farmers to produce a surplus ?

Which type of constitutional power allows congress to regulate immigration and naturalization?

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