Because it helped natives retain their lands and is now a cornerstone of native american land protection laws now
What I can infer from what Lewis and Clark saw when moving west from the Mississippi river is that the landscape along the river changed drasticallly. The forest receded, replaced first by the high prairie and then the shorter grass of the high plains. The temperatures became colder and as they continued their expedition by the river they realized that there was no water route to the pacific ocean, just more mountains.
Answer:
The answer is A
Explanation:
I took this today in class
I believe its RADAR.
They had airplanes in world war 1.
Same with machine guns.
And the first repeating rifle was made in 1860.
Which leaves the Radar.
-Steel jelly
There is not enough info to answer this question