Answer:
a) The Lewis and Clark Expedition
Explanation:
The U.S. claim was based on the explorations of Lewis and Clark and on the establishment of trading posts set up by John Jacob Astor's Pacific Fur Company, such as Astoria at the mouth of the Columbia River. Great Britain based its claim, in part, on James Cook's exploration of the Columbia River.
Answer:
The British had better weapons and the British also brought over new illnesses causing the native Americans to have lower numbers.
I am thinking the Statue of Liberty
