Question: When did the state encompassing KSTY become part of the United States?

full_context: Document 1: CKXC-FM: CKXC-FM is a Canadian radio station broadcasting at 93.5 FM in Kingston, Ontario owned by Rogers Media. The station currently broadcasts a country music format branded as Country 93.5.
Document 2: Utah Territory: Territory of Utah Organized incorporated territory of the United States ← 1850 -- 1896 → → → → → Territorial coat of arms (1876) The Utah Territory upon its creation. Modern state boundaries are shown for reference. Capital Fillmore (1851 -- 1856) Salt Lake City Government Organized incorporated territory Governor 1851 -- 1858 Brigham Young 1893 -- 1896 Caleb Walton West Legislature Utah Territorial Assembly History State of Deseret 1849 Utah Organic Act September 9, 1850 Colorado Territory formed February 28, 1861 Nevada Territory formed March 2, 1861 Wyoming Territory formed July 25, 1868 Statehood January 4, 1896
Document 3: Colorado Territory: Colorado Territory was officially organized by Act of Congress on February 28, 1861, out of lands previously part of the Kansas, Nebraska, Utah, and New Mexico territories. Technically the territory was open to slavery under the Dred Scott Decision of 1857, but the question was rendered moot by the impending American Civil War and the majority pro-Union sentiment in the territory. The name "Colorado" was chosen for the territory. It had been previously suggested in 1850 by Senator Henry S. Foote as a name for a state to have been created out of present-day California south of 35° 45'. To the dismay of Denverites, the town of Colorado City was designated the first territorial capital, quickly succeeded by Golden. Denver eventually became the temporary territorial capital, but was not designated the permanent capital until 1881, five years after Colorado became a state.
Document 4: Montana: Under Territorial Governor Thomas Meagher, Montanans held a constitutional convention in 1866 in a failed bid for statehood. A second constitutional convention was held in Helena in 1884 that produced a constitution ratified 3:1 by Montana citizens in November 1884. For political reasons, Congress did not approve Montana statehood until 1889. Congress approved Montana statehood in February 1889 and President Grover Cleveland signed an omnibus bill granting statehood to Montana, North Dakota, South Dakota and Washington once the appropriate state constitutions were crafted. In July 1889, Montanans convened their third constitutional convention and produced a constitution acceptable by the people and the federal government. On November 8, 1889 President Benjamin Harrison proclaimed Montana the forty-first state in the union. The first state governor was Joseph K. Toole. In the 1880s, Helena (the current state capital) had more millionaires per capita than any other United States city.
Document 5: History of Colorado: The United States Congress passed an enabling act on March 3, 1875, specifying the requirements for the Territory of Colorado to become a state. On August 1, 1876 (28 days after the Centennial of the United States), U.S. President Ulysses S. Grant signed a proclamation admitting the state of Colorado to the Union as the 38th state and earning it the moniker ``Centennial State ''. The borders of the new state coincided with the borders established for the Colorado Territory.
Document 6: Colorado Territory: The movement to create a territory within the present boundaries of Colorado followed nearly immediately. Citizens of Denver and Golden pushed for territorial status of the newly settled region within a year of the founding of the towns. The movement was promoted by William Byers, publisher of the Rocky Mountain News, and by Larimer, who aspired to be the first territorial governor. In 1859, settlers established the Territory of Jefferson, and held elections, but the United States Congress did not recognize the territory, and it never gained legal status.
Document 7: KSTY: KSTY (104.5 FM) is a country music formatted radio station licensed to Canon City, Colorado. The station is owned by Royal Gorge Broadcasting, LLC.
Document 8: KBCR-FM: KBCR-FM (96.9 FM, "Big Country Radio") is a radio station licensed and broadcasting to Steamboat Springs, Colorado, USA. The station broadcasts a country music format and is currently owned by Don Tlapek, through licensee Blizzard Broadcasting LLC.
Document 9: KSTZ: KSTZ (102.5 FM, "Star 102.5") is a commercial FM radio station in Des Moines, Iowa. The station has a Hot Adult Contemporary radio format. KSTZ is part of Saga Communications' Des Moines Radio Group, along with KPSZ, KRNT, KAZR, KIOA, and KMYR, with studios located on Locust Street in Des Moines.
Document 10: KRST: KRST (Nash FM 92.3 KRST) is a commercial radio station located in Albuquerque, New Mexico, broadcasting to the Albuquerque-Santa Fe, New Mexico area on 92.3 FM. KRST airs a country music format owned by Cumulus Media. Its studios are located in Downtown Albuquerque and the transmitter tower is located atop Sandia Crest east of the city.
Document 11: KSUT: KSUT originally signed on as a non-commercial community radio station licensed to serve the community of Ignacio, Colorado. The station has since expanded to two distinct formats, "Four Corners Public Radio", with a public radio format of NPR and music programming, and "Southern Ute Tribal Radio", which airs Native American music and news. While the stations have different legal call letters, both stations still refer to themselves on-air, online, and in marketing as KSUT. The stations are owned by "KSUT Public Radio", a non-profit corporation, and licensed to "KUTE, Inc."
Document 12: CJPR-FM: CJPR-FM is a Canadian radio station that broadcasts a country music format at 94.9 FM under its on-air branding as "Real Country 94.9" in Blairmore, Alberta. The station was owned & operated by Newcap Radio until they were bought out by Stingray Digital.
Document 13: Utah Territory: The Territory of Utah was an organized incorporated territory of the United States that existed from September 9, 1850, until January 4, 1896, when the final extent of the territory was admitted to the Union as the State of Utah, the 45th state.
Document 14: KBIK: KBIK (102.9 FM) is a radio station licensed in Independence, Kansas. It broadcasts country music. The station is owned by My Town Media, Inc.
Document 15: Ohio: On February 19, 1803, U.S. President Thomas Jefferson signed an act of Congress that approved Ohio's boundaries and constitution. However, Congress had never passed a resolution formally admitting Ohio as the 17th state. The current custom of Congress declaring an official date of statehood did not begin until 1812, with Louisiana's admission as the 18th state. Although no formal resolution of admission was required, when the oversight was discovered in 1953, Ohio congressman George H. Bender introduced a bill in Congress to admit Ohio to the Union retroactive to March 1, 1803, the date on which the Ohio General Assembly first convened. At a special session at the old state capital in Chillicothe, the Ohio state legislature approved a new petition for statehood that was delivered to Washington, D.C. on horseback. On August 7, 1953 (the year of Ohio's 150th anniversary), President Eisenhower signed a congressional joint resolution that officially declared March 1, 1803, the date of Ohio's admittance into the Union.
ground_truth: August 1, 1876
sub_queries: KSTY >> located in the administrative territorial entity Answer: Colorado
when did Colorado become part of the united states Answer: August 1, 1876