Question: When did the state where KRST is located become part of the U.S.?

full_context: Document 1: New Mexico: Inhabited by Native Americans for thousands of years before European exploration, it was colonized by the Spanish in 1598 as part of the Imperial Spanish viceroyalty of New Spain. In 1563, it was named Nuevo México after the Aztec Valley of Mexico by Spanish settlers, 223 years before the establishment and naming of the present - day country of Mexico; thus, the present - day state of New Mexico was not named after the country today known as Mexico. Its geographic characteristics made settlement and effective political control difficult which prompted Mexico's invasion and control of the area from 1824 to 1846. New Mexico's Spanish origins made cultural integration with Mexico unsuitable, which sparked the Revolt of 1837 and a growing economic association with the expanding United States. The 1848 Mexican -- American War indirectly capitalized on this tension and created the U.S. New Mexico Territory. It was admitted to the Union as the 47th state on January 6, 1912.
Document 2: Dakota Territory: The Territory of Dakota was an organized incorporated territory of the United States that existed from March 2, 1861, until November 2, 1889, when the final extent of the reduced territory was split and admitted to the Union as the states of North and South Dakota.
Document 3: KCLV-FM: KCLV-FM (99.1 FM, "Country 99") is a radio station licensed to serve Clovis, New Mexico. The station is owned by Zia Broadcasting Company. It airs a Country music format.
Document 4: KBQI: KBQI (107.9 FM, "Big I 107.9") is a radio station in Albuquerque, New Mexico which carries a country music format, owned by iHeartMedia, Inc.. Its studios are located in Northeast Albuquerque, and the transmitter tower is located atop Sandia Crest east of the city.
Document 5: KUNM: KUNM is a public radio station broadcasting on FM 89.9 MHz from high atop Sandia Crest, with broadcasts originating from the third floor of Oñate Hall, on the campus of the University of New Mexico (UNM) in Albuquerque, New Mexico.
Document 6: KZRR: KZRR (94.1 FM, "94 Rock") is a commercial radio station located in Albuquerque, New Mexico, broadcasting to the Albuquerque-Santa Fe, New Mexico, area. KZRR airs a mainstream rock music format. Owned by iHeartMedia, Inc. (formerly Clear Channel Communications), its studios are located in Northeast Albuquerque and the transmitter tower is atop Sandia Crest east of the city.
Document 7: KABG: KABG (98.5 MHz) is an American radio station licensed to Los Alamos, New Mexico serving the Santa Fe and Albuquerque radio markets. It is owned by American General Media and has a classic hits format playing top 40 hits mostly from the 1970s to the early 1990s. Its studios are located in Northeast Albuquerque and the transmitter tower is located west of Los Alamos, New Mexico.
Document 8: New Mexico Territory: The Territory of New Mexico was an organized incorporated territory of the United States that existed (with varying boundaries) from September 9, 1850, until January 6, 1912, when the remaining extent of the territory was admitted to the Union as the State of New Mexico, making it the longest - lived organized incorporated territory of the United States, lasting approximately 62 years.
Document 9: Southwest Territory: The Territory South of the River Ohio, more commonly known as the Southwest Territory, was an organized incorporated territory of the United States that existed from May 26, 1790, until June 1, 1796, when it was admitted to the United States as the State of Tennessee. The Southwest Territory was created by the Southwest Ordinance from lands of the Washington District that had been ceded to the U.S. federal government by North Carolina. The territory's lone governor was William Blount.
Document 10: KKOB-FM: KKOB-FM is an FM radio station based in Albuquerque, New Mexico, owned by Cumulus Media. It broadcasts on 93.3 MHz and has a Top 40 format. Its studios are located in Downtown Albuquerque and the transmitter tower is located atop Sandia Crest east of the city.
Document 11: 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 12: New Mexico: Inhabited by Native Americans for thousands of years before European exploration, it was colonized by the Spanish in 1598 as part of the Imperial Spanish viceroyalty of New Spain. It was named Nuevo México after the Aztec Valley of Mexico by Spanish settlers, 223 years before the establishment of the present - day country of Mexico. The present - day state of New Mexico was not named after, nor is it a part of, Mexico. Its geographic characteristics made settlement and effective political control difficult which prompted Mexico's invasion and control of the area from 1824 to 1846. New Mexico's Spanish origins made cultural integration with Mexico unsuitable, which sparked the Revolt of 1837 and a growing economic association with the expanding United States. The 1848 Mexican -- American War indirectly capitalized on this tension and created the U.S. New Mexico Territory. It was admitted to the Union as the 47th state on January 6, 1912.
Document 13: Florida Territory: The Territory of Florida was an organized incorporated territory of the United States that existed from March 30, 1822, until March 3, 1845, when it was admitted to the Union as the State of Florida. Originally the Spanish territory of La Florida, and later the provinces of East and West Florida, it was ceded to the United States as part of the 1819 Adams -- Onís Treaty. It was governed by the Florida Territorial Council.
Document 14: 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 15: 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.
ground_truth: January 6, 1912
sub_queries: KRST >> located in the administrative territorial entity Answer: New Mexico
when did New Mexico become part of the us Answer: January 6, 1912