A. Africa
According to a 200 census, 50.7% of Brazil consists of blacks or mixed-race citizens. As many know, Spain was never the victim of slavery but more of an enforcer of slavery. Africans often labored for and sold by the Spanish, since they participated in the slave trade. Holland, a Dutch nation, and Portugal also participated in slave trade so we can also eliminate these options. Lastly we can refer to our own history (or at least my own history), where Africans were used as slaves and sold like property by wealthy white men. Hope this helps!
Explanation:
The Industrial Revolution increased the material wealth of the Western world. It also ended the dominance of agriculture and initiated significant social change. The everyday work environment also changed drastically, and the West became an urban civilization.
Answer:
Constantine enacted another change that helped accelerate the fall of the Roman Empire. In 330 C.E., he split the empire into two parts: the western half centered in Rome and the eastern half centered in Constantinople, a city he named after himself.