Answer:
White settlers marched further westward towards the Pacific, inspired by the concept of Manifest Destiny, which believed that European Americans were divinely destined to occupy the whole North American continent. As they did so, they increasingly clashed with Native American Indians for land and natural resources, particularly when the discovery of gold in western regions triggered the Gold Rush. Prospective gold miners flocked to the Rocky Mountains and Pacific Northwest, fighting – often violently – with the Native Americans they met.
South Carolina wanted to secede because of President Lincoln and it means that they wanted to withdraw from the union <span />
The American Revolution didn't affect directly the Native Americans. It affected them because when the colonists won, it was official they had lost vast territories and would have to share land extensions with colonists. The Proclamation of 1763 wasn't so forceful after the war, because the colonists were independent from the King and he couldn't give them orders anymore. The Proclamation of 1763 kept colonists east of the Appalachian Mountains, just so you remember. France owed a large piece of land that was west of the Appalachian, and the colonists eventually bought it. Further on, they also took hold of the area around California and Florida. So as you see, the Natives were being taken away from lands and this led them to live in reservations. Nowadays, natives can live anywhere they want but many choose to live in reservations.
In a feudal system, a vassal, akin to a serf in most contexts, in general worked land on a lord's fiefdom in exchange for some of the produce from the land and some military protection.
