In which John Green teaches you how the Civil War played a large part in making the United States the country that it is today. He covers some of the key ways in which Abraham Lincoln influenced the outcome of the war, and how the lack...

Photography took the realities of modern warfare to the doorsteps of America. This video is part of a series on American Art.

The camera changed how many Americans saw the Civil War – and exposed millions to the horrors of conflict for the very first time.