Color map, entitled 'Map No 7, the Territorial Growth of the United States, 1783 - 1866,' shows the country's westward expansion and illustrates the notion of 'Manifest Destiny,' published in 1898. The map was created by British publisher Longmans, Green, & Co, and engraved by New York-based Struthers & Co. (Photo by Interim Archives/Getty Images)
