Answer:
Natives people of America had no immunity to diseases that European explorers and colonists brought with them. Diseases such as small pox, influenza, measles, and even Chicken pox proved deadly to the American Indians. Europeans were used to these diseases, Indian people had no resistance to them.
It would most likely be D. specific qualifications, but could also be A.connections by the fact that a bureaucracy is run by the state.<span />
Lack of resources in general
It may also mean shortage of flora and fauna
