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.
What are the choices? if you have any at all. im sorry if i cant help
Rebecca Roosevelt and Edgar Eisenhower they both say we need to cut our dependence on foreign oil and develop a national energy strategy