Which group opposed the spread of slavery during the 1860 presidential election?

The Republican Party

Explanation:

The Republican Party was the leading political organization in the North. Their main position was to be opposed to the expansion of slavery, the party considered slavery an immoral institution and believed that it should not spread in the US and should lead to extinction.

During the Election of 1860 Republicans nominated Lincoln as their candidate and endorsed the position against slavery.

the answer is richard nixion

b, public works good luck