Respuesta :
Answer:
johnathan thorns men set up the first us fort there
to trade with people following lewis and clark's trail
Explanation:
great
The united states have a greater claim to the area because Jonathan Thorn's men set up the first U.S. fort there.
John Astor planned to establish a military base for the war of 1812 at the mouth of the Columbia River.
What is the importance of the Columbia River?
Columbia River provides drinking water to several communities along its course and irrigates 6000,000 acres of farmland.
Nineteenth hydroelectric dams are constructed on the Columbia River between America and Canada which provide the half supply of electricity in the region.
Therefore the consecutive correct options are C, and C.
Learn more about the hydroelectric dams here:
brainly.com/question/8934285