1 and19th century, the United States benefited from the relatively stable political system and liberal tradition after independence, rich natural resources and a steady stream of immigrants, and its economy developed rapidly, becoming a rising industrialized power.

Industrialization in the United States began with the textile industry. At first, it mainly relied on British technology and equipment, but soon it had its own innovation. For example, the cotton gin invented by Whiteney in 1793 has improved the cotton picking efficiency by dozens of times.

②/KLOC-In the first half of the 9th century, the United States also made outstanding achievements in technological innovation in transportation, shipping and steel industry.

For example, the steamboat invented by Fulton directly promoted inland navigation. From 65438 to 0828, the United States began to build railways after Britain, which developed rapidly through private fund-raising and promoted the development of the western region.

③ The machinery manufacturing industry in the United States also developed in the first half of the19th century. Compared with the European countries in the same period, the United States is good at the standardization of production: the specifications of machine parts are unified, the precision is high, and the installation and maintenance are convenient, which promotes the mass production of assembly lines.

2. From 65438 to 0865, the American Civil War ended with the victory of the federal government and the northern industrial capitalism.

It maintained national unity, abolished black slavery, solved farmers' land problems in a democratic way, and ushered in a new climax of American industrialization.

/kloc-In the second half of the 9th century, during the second industrial revolution, American science and technology advanced by leaps and bounds, and a series of technological inventions by Bell and Edison gave wings to American industrialization.

Agricultural modernization: The development of manufacturing industry has also created conditions for agricultural mechanization production: in the 1980s, through land grant by the government and increased investment by individuals, American capitalist farms developed, agricultural production was further marketized, and economies of scale were formed.

Results:1At the end of the 9th century and the beginning of the 20th century, the United States replaced Britain as the "factory of the world" and rose to the number one industrialized country in the world.