While the South utilized slavery to sustain its culture and grow cotton on plantations, the North prospered during the Industrial Revolution. Northern cities, the center of industry in the United States, became major metropolises due to an influx of immigrants. With this willing and cheap workforce, the North did not require a slave system. Although some northerners found the institution of slavery morally reprehensible, most did not believe in complete racial equality either. Slavery became even more divisive when it threatened to expand westward because non-slave holding white settlers did not want to compete with slaveholders in the new territories.
One example of how technology has caused social change includes the creation of the assembly line and interchangeable parts. The assembly line and interchangeable parts resulted in the ability of businesses all over the world to mass produce items. In order to mass produce items, businesses need unskilled workers to be able to repeat tasks constantly within a work day. This caused an increase in the demand for unskilled workers.
This demand for unskilled workers provided millions of job opportunities for immigrants coming into the US, especially during the late 19th and early 20th century. Along with this, the development of the assembly line and interchangeable parts indirectly leads to urbanization. This was a massive movement of families from the countryside to the city in order to seek new job opportunities as factories.
Foreign countries were given total control over trade in China
Mostly due to the ideas of Manifest Destiny. They started going westwards with the desire to span the United States from coast to coast, and then they started going worldwide. The idea behind it is that the United States were destined to help the world become free and democratic like they were so they started helping people worldwide in rebellions against colonialism or in similar affairs.
Well, after the War, the people from Germany needed someone to blame and Hitler began to point them towards the Jewish. After his release in 1924, Hitler gained popular support by attacking the Treaty of Versailles and promoting Pan-Germanism, anti-Semitism, and anti-communism with charismatic oratory and Nazi propaganda. Hitler frequently denounced international capitalism and communism as being part of a Jewish conspiracy.