Answer:
C
Explanation:
They are expanding there knowledge and gaining power by doing that.
Answer:
They crossed through Montana and made their way to the Continental Divide via Lemhi Pass where, with Sacagawea's help, they purchased horses from the Shoshone. While there, Sacagawea reunited with her brother Cameahwait, who hadn't seen her since she was kidnapped
The principle of government by law.
Answer:
sovereignty
Explanation: with sovereignty, a state can rule itself and can govern how they see fit.