 Indian Territory later came to refer to an unorganized territory whose general borders were initially set by the Indian Intercourse Act of 1834, and was the successor to the remainder of the Missouri Territory after Missouri received statehood.The borders of Indian Territory were reduced in size as various Organic Acts were passed by Congress to create incorporated territories of the United States.The 1907 Oklahoma Enabling Act created the single state of Oklahoma by combining Oklahoma Territory and Indian Territory, ending the existence of an Indian Territory.