Who rejected the final compromise effort to stop secession?

planters in the South, because they had economic ties to the North

Abraham Lincoln, because it undercut the gains made by the 1860 election

farmers in the South, because they had no vested interest in slavery

John Crittenden, because Republicans upheld popular sovereignty

John Crittenden

John Crittenden is the correct answer. He rejected the final compromise effort to stop secession. Crittenden, a senator from Kentucky, proposed a series of constitutional amendments that aimed to prevent secession and protect slavery. However, Republicans, including Abraham Lincoln, rejected the plan because it undermined the gains made by the 1860 election, in which they opposed the expansion of slavery.