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Answer:
Slavery, territorial crisis, nationalism
Explanation:
In the early nineteenth century the US had a dual structure - capitalism in the north and slavery in the south. These two structures were completely contradictory structures within a single state. During the American-Mexican War, the United States seized most of the land in the south. There was a lot of empty land here. The favorable climate in the southern part contributed to the development of the agrarian sector, especially cotton growing. The fact that the immigrants mostly went north created a working minority here. Therefore, from the seventeenth century onwards, blacks were brought here from Africa. In the South, 1/4 of the whites were slaves.
The development of machine-building in the north and the development of the agrarian sector in the South made the interrelationships between these two regions necessary. The South needed new technologies, and the North needed ready-made tobacco and cotton. But the difference between the structures was that they were saying their word seriously in relationships. The liberation of fleeing slaves and the emergence of new structures in the newly occupied territories led to the outbreak of civil war. Some 620,000 people were killed during the war
