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.
B - Advocated in favor of slavery.
Colonialism intensified after World War I because colonial powers such as England and France emerged from the war weakened and close to bankruptcy. Consequently, they believed that colonialism would help them on their path to economic recovery and survival as international powers.
The end of ww1 I think because they are free to do what they want because the war is over
