b) Whig Party

The Whig Party opposed Manifest Destiny, fearing the spread of slavery. Established in the 1830s, the Whigs were a political party that stood in opposition to the policies of President Andrew Jackson and the Democrats. The Whigs were concerned that the expansion of U.S. territory, particularly through aggressive policies like Manifest Destiny, would lead to the extension of slavery into new territories. This opposition was part of a broader national debate over slavery that would eventually lead to the Civil War.