Why did European countries turn to slavery in the “New World?

Which british general is in charge of the war effort in the south

What was the intended purpose of the frescoes from the house in dura-europos?

If the imperial dynasty had continued to rule china, it is most likely that a) the economy would have improved rather than weakened b) european nations would have gotten more of a foothold in china c) revolutionary groups would not have gained any power in the country d) communism would not have received support among the poor