The emancipation of enslaved people in the U.S. took place over a protracted period. The articles in this curated list dig into the complicated history.

For many immigrants to the U.S. in the late 19th century, July 4th was deeply significant: Their own home countries were fighting for independence.

A look at the history of Kwanzaa and how it has evolved since it was founded by Maulana Ronald Karenga.

Yes, there was once such a thing as a liberal Republican. We take a look at the rise and fall of John Lindsay, former Mayor of New York.

A comparison between immigration policies in the 1890s and today.