Black hawk war began bc a.
Sauk leaders signed the Treaty of Dancing Rabbit Creek.
b.
Congress passed the Indian Removal Act.
c.
the Sauk moved onto a village established by white settlers.
d.
federal officials ordered the removal of all American Indians from Illinois.

B.Congress passed the Indian Removal Act.

Explanation:

The trigger point for the war was when Black Hawk and warriors from the Kickapoos, Meskwakis and Sauks crossed the Mississippi River into the territory of Illinois. Though Black Hawk's motives were mysterious his intent was to recapture the land that the US had claimed in the 1804 treaty without bloodshed.