How did colonists show their opposition to british policies

The colonists started to resist by boycotting, or not buying, British goods. In 1773 some colonists in Boston, Massachusetts demonstrated their frustration by dressing up like Indians, sneaking onto ships in the harbor, and dumping imported tea into the water. This was called the Boston Tea Party.

the answer to your question is a. the salt plains

in 1811, he led an expedition, known as the george c. sibley expedition, to improve relations with the pawnee and kansa tribes, and also to locate the rumored jefferson's salt mountain