What effect did the book Uncle Tom's Cabin by Harriet Beecher Stowe have on the nation ( 1 point )

A.) It convinced Southerners to expand slavery

B.) It increased the number of immigrants seeking refuge.

C.) It convinced Northerners that slavery should be outlawed.

D.) It increased the number of settlers near Southern Rivers.

C.) It convinced Northerners that slavery should be outlawed.