Answer:
The Crusades were a series of religious wars between Christians and Muslims started primarily to secure control of holy sites considered sacred by both groups. In all, eight major Crusade expeditions occurred between 1096 and 1291
The answer is B because I just had the question not to long ago
The Atlantic Slave Trade was mostly organized in West Africa.
Popular sovereignty is where the government is created and run by the will of the people.
So your answer would be people.
They were not treated well, they were immigrants looking for a better life in the US and they worked for lower wages which took away jobs from people that had been in the US in many industrial cities