Osage (/oʊˈseɪdʒ, ˈoʊseɪdʒ/; Osage: 𐓏𐒰𐓓𐒰𐓓𐒷 𐒻𐒷‎ Wažáže ie) is a Siouan language that is spoken by the Osage people of Oklahoma. Their original territory was in present-day Missouri and Kansas but they were gradually pushed west by European-American pressure and treaties. Osage is written primarily with two systems: one using the Latin script with diacritics, and another derived Osage script created in 2006. Osage is among the few indigenous languages in the United States that has developed its own writing system.