Civic rights and responsibilities what actions by the radical republicans were intended to protect the civil rights of african americans?

This is known in history as the Civil Rights Act of 1866 where a coalition was formed by both moderate and radical republicans. In such act, it made African Americans citizens of the United States of America, including the total elimination of discrimination against African Americans. 

The articles created a national government composed of a congress, which had the power to declare war, sign treaties, make alliances and more.