线索美国内战原因美国的扩张夺取西、英、法的殖民地:从1803～1846年,美国夺取了西、英、法在北美的殖民地,使它的领土从大西洋延伸到太平洋。屠杀和驱赶印第安人美国向西扩张领土,主要是霸占土地和抢劫财产。印第安人的人数锐减,过着悲惨的生活。扩张领土的目的为资本家获取工业原料和销售市场。奴隶主为获得土地扩大种植园经济。两种经济制度的矛盾矛盾北方:资本主义经济。南方:种植园奴隶制经济。在扩张过程中,南方种植园经济严重阻碍北方资本主义经济的发展。焦点:黑人奴隶制的废存问题。奴隶制存废的奴隶主把棉花等原料输往英国,又从英国输入工业品,北方丧失了南部的工业原料和销售市场。 Clues US Civil War Reasons for U.S. Expansion US, Western and French Colonies: From 1803 to 1846, the United States seized the colonies of North West America, West and France and extended its territory from the Atlantic to the Pacific Ocean. Massacre and Dispel Indians. The United States expanded its territory westward, mainly on the occupation of land and looting of property. The number of Indians dropped sharply and led a miserable life. The purpose of expanding the territory for the capitalists to obtain industrial raw materials and sales market. Slave owners expand their plantation economy for land acquisition. Contradictions and Contradictions between the Two Economic Systems North: Capitalist Economy. South: Plantation Slave Economy. In the process of expansion, the economic growth of the southern plantations seriously hindered the development of the capitalist economy in the north. Focus: Scrapyard problem of black slavery. Slave slaves left the raw materials such as cotton to the United Kingdom and imported them from the United Kingdom, and the North lost its industrial raw materials and sales market in the south.