Civil rights activists challenged southern voting laws because they conflicted with
a. the fifteenth amendment.
b. the civil rights act of 1964.
c. the emancipation proclamation.
d. the declaration of independence

It was the Fifteenth Amendment.  It gave all men in America the right to vote.  South though opposed this and made many attempts to prevent Blacks from voting.  It Federal intervention as the National Guard had to escort African Americans to vote in the polls.

answer; taking up arms to defend the nation;

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.