They fought over the moral issue of slavery.
Butt this is what google told me xD
They fought over many reasons like...
Industry vs. Farming. ...
States' Rights. The idea of states' rights was not new to the Civil War. ...
Expansion. As the United States continued to expand westward, each new state added to the country shifted the power between the North and the South. ...
Slavery. ...
Bleeding Kansas. ...
Abraham Lincoln. ...
Secession. ...
Activities.
I believe the answer is C. Hope this helps
The development of social welfare policy in the united states began during the Great Depression
Following the great Depression, there was need for the government to intervene in alleviating the problems wrought by a depressed economy. This included providing federal aid for poor families