In what years did the use of slaves start to decline?

As with any small island country, cuba has fewer natural resources than countries such as brazil. this affects their economy in that cuba a) exports only manufactured products. b) exports more products than it imports.. c) must import more products than it exports. d) has imposed trade barriers against the united states.

How did the kansas-nebraska act contradict the missouri compromise?

When the communist, under mao, took control of china in 1949 they announced total support support for which country and its ideology?