Between the 16th and 19th centuries, what term was widely used to refer to the forced migration of millions of Africans across the ocean to serve as slaves and laborers in the Americas?

Eleanor Roosevelt played a pivotal role as the Chair of the UN Human Rights Commission in drafting which historical document?

Idi Amin was a military dictator of which African nation during the 1970s?

The famous 'Iron Curtain' speech (1946) is associated with which of the following leaders?