Abraham Lincoln played a significant role in Black history, particularly for his actions related to the abolition of slavery. As the 16th President of the United States, Lincoln issued the Emancipation Proclamation on January 1, 1863, which declared all enslaved people in Confederate states to be freed. This marked a turning point in the Civil War and provided a moral cause for the Union to fight for the end of slavery.

Lincoln also supported the passage of the 13th Amendment to the United States Constitution, which formally abolished slavery nationwide. The amendment was passed by Congress in January 1865 and ratified by the states later that year. Lincoln's leadership and commitment to ending slavery were instrumental in bringing about this monumental change in American history.

Despite his efforts to end slavery, Lincoln's views on racial equality and the rights of Black Americans were complex and evolved over time. While he believed in the abolition of slavery, he also held some prejudiced views and his policies did not always prioritize the full equality and rights of African Americans.

Overall, Abraham Lincoln's contributions to Black history lie in his role in the abolition of slavery and the eventual passage of the 13th Amendment, which marked a crucial step towards freedom and equality for Black Americans in the United States.