Input (grade 13): The next year, on May 2, 1890, Congress passed the Oklahoma Organic Act, which organized the western half of Indian Territory into Oklahoma Territory.
Output (grade 10): Oklahoma Territory was an organized territory of the United States from May 2, 1890 until November 16, 1907, when Oklahoma became the 46th state. It was made up of the western area of what is now the state of Oklahoma.