Answer:
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.
Explanation:
Answer:
The Emancipation Proclamation, or Proclamation 95, was a presidential proclamation and executive order issued by United States President Abraham Lincoln on September 22, 1862, during the Civil War.
