The Republic of Mars, the Martian Republic or commonly referred to as Ka or Mars is a republic that spans the entire surface of the planet Mars, divided into 7 regions: Tharsis, Isidis Planitia, Elysium, Amazonis Planitia, Hellas, Borealis Ka and Australis Ka. It is a protectorate of the Colonial Authority located in the planet Mars in the Sol System. With over 200 million inhabitants it is the largest human-occupied planet outside Earth. Mars currently have a delegation and a small contingent at the Presidium of the Colonial Authority.