Answer:
The answer would be nationalism.
Explanation:
They have different ecomimic values due to their differences in place and times. As well as being different nationalites, they are going to be different socially too. Considering they may have different languages, it would affect the way people from the north would socialize to people in the south. The USA and China have different political reasons and presidents so of course this would be the same wiht the North and South.
The stock market crash of 1929; the collapse of world trade due to the Smoot-Hawley Tariff (Hawley, it was signed by President Herbert Hoover on June 17, 1930. The act raised US tariffs on over 20,000 imported goods. The tariffs under the act, excluding duty-free imports were the second highest in United States history, exceeded by only the Tariff of 1828), government policies; bank failures and panics; and the collapse of the money supply.
The purpose was to make people believe what about what the propaganda ex: Nazi's Propaganda Against the jews, or american army propaganda to join the army.
Old imperialism was about trade, countries just wanted to trade with other countries, so there would be trading posts everywhere around the world. new imperialism was more about the money, they went into countries setting up factories and plantations. People went into war because they wanted power.
social Darwinism spread cultural values - racism/cultural superiority; white man's superiority
This neighborhood segregation in the north contributed to schools being segregated
