I need help with this question, please help

hope this helps

Explanation:

A) was the foundation for the Declaration of Independence.

B) allowed black colonists freedom centuries before emancipation.

C) allowed colonists to import slaves from Africa to work on southern plantations.

D) was the first example of colonial European self-government in northeastern North America.

its D

Explanation:

The Mayflower Compact was important because it was the first document to establish self-government in the New World. It remained active until 1691 when Plymouth Colony became part of Massachusetts Bay Colony.

i also think it is c

on the morning of  july 21,  1861, general mcdowell ordered the  unionarmy to attack. it was on this hill that  confederate  colonel thomas jackson and his forces held back theunion  troops.