What is david walker?

David Walker (1785-1830) was an African-American abolitionist and writer, whose work "Walker's Appeal in Four Articles; Together with a Preamble, to the Coloured Citizens of the World, but in Particular and Very Expressly, to Those of the United States of America" played a significant role in the struggle against slavery in America. Walker's Appeal, which was published in 1829, was a radical call to African-Americans to fight for their rights and freedom, and was widely circulated among abolitionists. Walker was also involved in the Underground Railroad, a network of secret routes and safe houses used by slaves to escape to freedom in the North. He died in 1830, under mysterious circumstances, and his legacy remains an important part of the history of African-American struggle for freedom and equality.