Answer:
A. Working with Native Americans was necessary to expand the US.
D. Native Americans sympathized with enemies of the US in North America.
Explanation:
Thomas Jefferson was the third President and one of the Founding Fathers of the United States.
In his opinion, Native Americans were the people of noble race and equal to the whites in body and mind. Yet he considered them inferior in terms of culture and technology.
So, based on his dealing with Native Americans, he would agree with these two statements:
"A. Working with Native Americans was necessary to expand the US.
D. Native Americans sympathized with enemies of the US in North America."
He regarded that Native Americans were necessary to expand the territories of the US but also believed that Native Americans residing in North America sympathized with its enemies.
Therefore, option A and D are correct.