Why was the election of 1856 important

Frémont decried the expansion of slavery, while Buchanan warned that the Republicans were extremists whose victory would lead to civil war. ... Buchanan won a plurality of the popular vote and a majority of the electoral vote, taking all but one slave state and five free states.

Instance of recurring event: United States presidential Election

Date: Tuesday, November 4, 1856

The presidential election of 1856 was also the last time to date that a Democrat was elected to succeed a fellow Democrat as president, and the last one in which a former president ran for election to the presidency on a third party ticket until 1912, when Theodore Roosevelt ran on the Progressive Party ticket

where is the passage?

can't without the passage.

post the full question.

from the conditions of the working class in england by friedrich engels,the main idea is :