Answer:
Because the ming dynasty created and expanded trade networks across Asia
Explanation:
I believe the answer is: diversity, ethnicity, and ethnocentrism
Ethnicity refers to the culture that people accustomed to when they grow up. Diversity refers to the social groups which members consist of groups with different ethnicities. Ethnocentrism refers to the act of judging other culture by using our own culture as a basis.
Circadian Rhythm? I might be completely wrong
Colonist enslaved american indians and africans so that they can do the work without a high chance of slavery. Colonist tried doing it themselves but died in the process of doing so. In that case, they kidnapped Natives and used them for hard labor. Same with Africans