Because he discovered the new world in 1492
Poor workers were often housed in cramped, grossly inadequate quarters. Working conditions were difficult and exposed employees to many risks and dangers, including cramped work areas with poor ventilation, trauma from machinery, toxic exposures to heavy metals, dust, and solvents.
Seleucus took over the entire empire
The reason why has to do with law, marriage and a family that disagreed with their patriarch's evolving views on slavery. Like nearly all wealthy landowners in Virginia, George Washington owned enslaved people who worked his land. He received the first enslaved workers of his own when his father died in 1743.
C - Swahili
D East African societies had more central control than West African societies