Union soldiers were fighting for the freedom of slaves and reuniting the states. Confederate soldiers fought for protecting the confederacy. Yes, it did change over the war.
Although many of the engagements of the American Revolution were conventional, guerrilla warfare was used to a certain extent during this conflict from 1775–1783, which made a significant impact. Guerrilla tactics were first used at the Battles of Lexington and Concord by the Patriots at April 19, 1775.
Took advantage of circumstances and used propaganda and hitlers leadership
Francisco Vasquez de Coronado was the first Spanish explorer reached as far as inland as present day in Kansas and it is about 2000 miles he covers to reach Central Kansas. He led a large voyage and exploration from Mexico to present-day Kansas.
By issuing the Declaration of Independence, adopted by the Continental Congress on July 4, 1776, the 13 American colonies severed their political connections to Great Britain.