What bring abraham lincoln to national prominence?

a.) the dred scott decision

b.) lincoln's debates with stephen douglas

c.) lincoln's efforts to abolish slavery

d.) lincoln's willingness to campaign for james buchanan

Lincoln’s effort to abolish slavery helped bring Abraham Lincoln to national prominence. Thus the correct answer is Option C

Explanation:

In 1860, Abraham Lincoln was elected the 16th President of the United States. Even after being elected president, it was Abraham Lincoln's attempt to end the practice of slavery from the nation. The system of slavery was between the south and north region.

White people of the southern states used to call the residents of the northern states for agriculture and wanted to keep them as slaves. But Abraham Lincoln wanted to end the practice of slavery and he end this practice by his every effort.

i confess that there are several parts of this constitution which i do not at present approve, but i am not sure i shall never approve them: for having lived long, i have experienced many instances of being obliged by better information or fuller consideration, to change opinions even on important subjects, which i once thought right, but found to be otherwise. it is therefore that the older i grow, the more apt i am to doubt my own judgment, and to pay more respect to the judgment of others.