Two things that the Radical Republicans insisted be part of their Reconstruction plan was that the military would stay in the South to supervise the transition, and that the newly freed slaves would be offered all the freedoms of whites in the South.
The answer is C principles that restrict the extent of something.
During the 19th century, the United States ability to remain isolated from European affairs was largely due to its "geographic location," since it is bordered by the two largest oceans in the world.
