What was the name of the party formed in 1840 that opposed slavery and promoted its abolition?

The Liberty Party, formed in 1840, was the first political party in the United States specifically organized to oppose slavery and advocate for abolition. Its platform focused on promoting immediate emancipation and rejecting the expansion of slavery into new territories and states. The party emerged in response to growing tensions over the moral and political implications of slavery, particularly in the context of westward expansion.

This party laid the groundwork for future anti-slavery movements and politically active groups. Although the Liberty Party did not win significant political power, it was instrumental in raising awareness about the abolitionist cause and influencing other political movements. Ultimately, it contributed to the emergence of subsequent parties that continued to challenge the institution of slavery, culminating in the formation of the Republican Party in the 1850s.

Other parties mentioned, such as the Free Soil Party, arose later and had different agendas connected to the restriction of slavery, while the Democratic Party had a more complex relationship with slavery, often representing pro-slavery views in that era.