What was oregon fever?
a. a horrible disease that killed many people
b. the desire to head west for oregon
c. a missionary group in oregon
d. the desire to pan gold in oregon

i would go with the last one

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.

the name of the theory is landmass theory.