Southern reconstruction is a good organizing topic for the post–Civil War era.
Step-by-step explanation:
During the civil war, there was a lot of destruction of the infrastructure and a huge loss of life ad property especially in the south. This destruction needed to be built again and the infrastructure needed to be built.
This led to the beginning of the southern reconstruction after the civil war. The aim of this was to develop the infrastructure of the southern part of the country to develop the economy. It lasted from 1865 to 1877.