Answer:
The 13th amendment, which formally abolished slavery in the United States, passed the Senate on April 8, 1864, and the House on January 31, 1865. On February 1, 1865, President Abraham Lincoln approved the Joint Resolution of Congress submitting the proposed amendment to the state legislatures.
Step-by-step explanation:
Most of the “workers” on the Underground Railroad were white abolitionists. Truth: In fact, most people who helped escaping slaves were free blacks or escaped slaves. And even though the whites who helped runaways were abolitionists who wanted to end slavery, not all abolitionists supported the Underground Railroad.