United States Expansionism: 1790s- 1860s

The main wish of the United States from the 1790s to the 1860s was to expand towards the west. Americans view the west as many free lands, growth of industry, and a clear fateful opportunity. This desire for more wealth and wealth has led Americans to conquer the lands of others. The obvious destiny and expansion to the West have many problems with Americans, Indians who caught Americans in the Civil War. The first problem for Americans is to solve these problems when existing Indians conquer their land.

From 1790 to 1860, the number of US countries practicing slavery increased from six to fifteen. From 1790 to 1808, Congress prohibited the import of slaves from Africa and slave countries imported more than 80,000 Africans. About 1860 a year before the outbreak of the civil war, about a third of the residents of the southern states were slaves. Whitney could not benefit from cotton gin due to patent law controversy but he was awarded the US government in 1789 and produced 10,000 musketry guns in two years, It was not made between. . At that time, the guns were made one by one by experienced craftsmen, and even if repair was not impossible, each weapon was made of its own parts. However, Whitney developed a manufacturing process using standardized identical and interchangeable parts. This speeds up production and simplifies maintenance.

Slavery support by the US government is based on strong practicality. In 1790, 1,000 tons of cotton was produced annually in the south. By 1860 it was one million tons. In the same period 500,000 slaves have grown to 4 million. The system of slave rebellion and conspiracy (Gabriel Prosser, 1800; Denmark Vesey, 1822; Nat Turner, 1831) is a ruling in the southern states, struck by law, court, military and national racial prejudice Established a network. Political leader

From 1790 to 1860, industrialization in the eastern part of the United States raised similar problems. For a long time, scholars believe agricultural quality is bad. Therefore, the agricultural labor force leaves the factory to agriculture like a shoe-producing factory or a factory like the New England cotton factory. These manufacturers offer employment opportunities for women and children, otherwise the possibility of production is limited for non-economic farms. However, the manufacturing market still occupied most of the east before 1860. Therefore, it is unknown who will purchase this product to support the growth of the manufacturing industry before 1820 and the large-scale industrialization process in the eastern region. From 1840 to 20 years