In the 15th century, china stopped trading with others areas of the world and became increasingly isolated. which of these demonstrates that this action was the result of china's fear of cultural change

native americans suffered high rates of poverty and unemployment.

during the late 1960s and early 1970sthe need for political militancy grew among the native americans. throughout the 1960s, they had been the nation's poorest minority group, the most deprived group, according to practically every socioeconomic measure. in 1970, the indian unemployment rate was 10 times the national average, and 40 percent of the native american people were below the poverty line.

is there answer chooses?

the answer would more than likely a.)falling crop prices  

hope the answer is right and ,either way have a nice day.