Frederick Douglass argues for African-American participation in the Union army.

Slavery has occurred in many forms throughout the world, but the Atlantic slave trade-which forcibly brought more than 10 million Africans to the Americas-stands out for both its global scale and its lasting legacy. Anthony Hazard discusses the historical, economic and personal impact of this massive historical injustice.

A letter written by a free African-American Union soldier argues for equal pay for African-American soldiers.

This is the text of New Orleans Mayor Mitch Landrieu’s speech given when the final Confederate monument in the city was taken down.