How were political opportunities created for African Americans during
Reconstruction in South Carolina successful?

a. Those African American men who had proof of service in the Union army during
the war were able to vote and hold public office.

b. African American men and women were given full political rights as a result of
Presidential Reconstruction in South Carolina.

c. South Carolina chose Francis L. Cardozo as its first African American governor in
the statewide elections of 1868.

d. As a part of Congressional Reconstruction, African American men were able to
vote and take an active role in state government.

The Answer is Option D: As a part of Congressional Reconstruction, African American men were able to  vote and take an active role in state government.

Explanation:

Sixty percent of the voting population in South Carolina were African American, and this assured Republicans were in control of the state government during Reconstruction. This allowed for the passage of progressive legislation that sought to improve conditions for the black communities,  more than was accomplished by any other state in the South. In 1869 the South Carolina Land Commission was created to encourage landownership among poor blacks. Francis L. Cardozo was elected as Secretary of State in 1868.  However, Organizations such as the Ku Klux Klan were active in the state and they beat hundreds of victims and murdered many public figures at this time such as Solomon Dill and James Martin. Between 1868 and 1871 South Carolina Republicans were subjected to terror.

the doctrine of nullification recommended that states living inside the union have the one-sided, inalienable ideal to void any law made by the national government that could be esteemed illegal.

the united states was shaped based on a general agreement among its individual states. hence, it is inferred that under the hypothesis of invalidation, since the states are the establishment of the union, they have the ability to referee and disprove unlawful laws.

i think it was because of how protected egyptian civilization was was which allowed them to evolve without much outside influence.