Keywords: Persian Empire, 490 BC.gif Persian Empire 490 BC showing route of Cyrus the Younger Xenophon and the 10 000 ; Author/Source http //www dean usma edu/history/ The Department of History United States Military Academy ; Permission In the public domain as original works of the United States federal government and/or military http //www dean usma edu/history/web03/atlases/map 20home htm For a version of this image altered to display better in Wikipedia articles converted to PNG format slightly cropped see File Persian Empire 490 BC png map PD-USGov Military maps Maps of the United States Military Academy Maps showing 5th-century BCE history Ten Thousand campaign |