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.
Protecting the interests of native-born or established inhabitants against those of immigrants
Colonial unity, an ongoing struggle, was necessary for preserving freedom. It was imperative that the colonies put aside their differences and unite even during the French and Indian War when they were allies with the British.
Reconstruction came to an end as there were too many southreners opposing of the reconstruction
