The U.S. justified its involvement in the Vietnam War by stating that they were fighting against communism. At the time, the Soviet Union was seen as a huge threat and there was a rivalry between the two nations.
The foundation of Jim Crow laws was that the "African Americans are culturally and intellectually inferior to white people."
In very general terms, the Cold War was "<span>a period of difficult relations between the U.S. and the Soviet Union," since although there were a number of "proxy wars" during this time, the US and the USSR never engaged directly in conflict. </span>
I think its C. they recognized Abu Bakr as the rightful caliph of islam.