Everybody knows that Europeans took a lot of land from Native Americans, but this animated GIF by Tumblr user sunisup gives a great sense of just how fast the people living in North America were pushed west after Christopher Columbus “discovered” the continent. She turned an old graphic by Louisiana State professor Sam B. Hillard into a mini-movie that viscerally demonstrates the gradual chopping away of Native American land through cessions, or a surrender of territory to another entity. The green represents Native American land, and any part that turns white was ceded.