<span>Changes in transportation and communication technologies since the 1980s. Hope this helps.</span>
Explanation:
<h3>History is facilitated by the formation of a "true discourse of past" through the production of narrative and analysis of past events relating to the human race.</h3>
It depends on the war. the US government wanted more land and went to war getting todays California. there's another time where I believe it might have been the Indian war. it was fought for a no good reason. many were affected by this war.
Answer:
gravel, sand, silt, and clay which is called alluvium
Explanation: