During which party system did the antislavery Whigs and Democrats form the Republican Party?

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The antislavery Whigs and Democrats formed the Republican Party during the third party system, which took place from the mid-1850s to the mid-1890s. This system was characterized by sectionalism, with the issue of slavery heavily dividing the North and South. The Republican Party emerged as a major political force in the North, advocating for the abolition of slavery and drawing support from former Whigs, Democrats, and members of the Free Soil Party.

During Which Party System Did the Antislavery Whigs and Democrats