The westward expansion carried slavery down into the Southwest, into Mississippi, Alabama, crossing the Mississippi River into Louisiana. Finally, by the 1840's, it was pouring into Texas. So the expansion of slavery, which became the major political question of the 1850's, was not just a political issue.
The revisionists rejected the revolutionary approach
The answer is b)to train ministers
When someone decides to change a source with invalid, incorrect, irrelevant, or just idiotic information.