This is the wrong subject buddy
Explanation:
Because of new technology like weapons, strategies, and transportation, the nature of warfare changed immensely during and after the Civil War.
Answer:
They wanted to expand their terratory
Explanation:
Since the US was almost complete, and only a few indian tribes lived in plantations made by the US goverment. The goverment wanted to make America whole so that is why they decided to wage war in the 19th century.
He insisted that his people make peace with the native people. This way they could avoid conflict.