Answer:
Heya! To answer this question, 'B' would be correct.
A- No, because they actually took the Native Americans land, and weren't helping them.
B- Correct!
C- No, they never received encouragement, they expanded westward for more land, gold, and jobs.
D- No, the Native Americans were there before them and the Americans kicked them off the land.
Hope this helps! Have a good day, and good luck on the test!