Final answer:
The Crittenden Compromise, proposed by Senator John J. Crittenden, aimed to recognize slavery in territories south of the Missouri Compromise line and prevent interference from the federal government. However, it did not receive support from President-elect Abraham Lincoln or the Republican Party.
Step-by-step explanation:
The Crittenden Compromise, proposed by Senator John J. Crittenden, called for a constitutional amendment that would recognize slavery in all territories south of the Missouri Compromise line, the 36°30' line. It also aimed to guarantee that the federal government would not interfere with slavery in the future. However, President-elect Abraham Lincoln refused to support the plan because it went against the Republican Party's goal of stopping the spread of slavery into territories. Therefore, the Crittenden Compromise did not succeed.