What was john crittendens suggestion to save the union?

John Crittenden proposed a series of constitutional amendments in late 1860 aimed at preserving the Union and preventing the secession of Southern states. His plan included extending the Missouri Compromise line westward and protecting slavery in all territories south of this line, thereby appeasing Southern interests. Crittenden's proposals were ultimately rejected by Congress, as they failed to gain sufficient support from both Northern and Southern lawmakers. His efforts reflected the deep divisions in the country as tensions escalated toward the Civil War.