The general amnesty act of 1872
a.
allowed african americans to sue private businesses for discrimination.
b.
ended the impeachment proceedings against president johnson.
c.
placed radical republicans in control of most southern states.
d.
allowed most former confederates to hold public office.

i think the answer is b

Explanation:

D. Allowed most former Confederates to hold public office.

Explanation:

The Amnesty Act of 1872 was enacted on May 22, 1872. It annulled the sentences dictated on previous Confederates based on the 14th Amendment of 1868.

In particular, this act anulled restrictions to vote and inabilities to hold office on people who were insurrectionists in the American Civil War, with the exception of senators and members of the 36th and 37th Congresses as welll as officers of different services, directors of Departments, and American foreign ministers.  

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.