Question: De Borgia is a census-designated place (CDP) in Mineral County, a county located in the U.S. state of Montana, in which country?

full_context: Document 1: St. Regis, Montana: St. Regis is a census-designated place (CDP) in Mineral County, Montana, United States. The population was 319 at the 2010 census.
Document 2: Riverbend, Montana: Riverbend is a census-designated place (CDP) in Mineral County, Montana, United States. The population was 442 at the 2000 census.
Document 3: Mineral County, Montana: Mineral County is a county located in the U.S. state of Montana. As of the 2010 census, the population was 4,223. Its county seat is Superior.
Document 4: Missoula, Montana: Missoula is a city in the U.S. state of Montana and is the county seat of Missoula County. It is located along the Clark Fork River near its confluences with the Bitterroot and Blackfoot Rivers in western Montana and at the convergence of five mountain ranges, thus is often described as the "hub of five valleys". In 2016 , the United States Census Bureau estimated the city's population at 72,364 and the population of the Missoula Metropolitan Area at 116,130. In the 1990s, Missoula overtook GreatFalls as Montana’s second‑largest city, behind Billings. Missoula is home to the University of Montana, a public research university.
Document 5: Superior, Montana: Superior is a town in and the county seat of Mineral County, Montana, United States. The population was 812 at the 2010 census. Superior was named after its founders' hometown of Superior, Wisconsin in 1869. The post office was established in 1871 after Mineral County became the site of one of the largest gold strikes that helped settle the West.
Document 6: Petroleum County, Montana: Petroleum County is a county located in the U.S. state of Montana. As of the 2010 census, the population was 494, making it the least populous county in Montana and the seventh-least populous in the United States. Its county seat is Winnett. The Montana Legislature approved the formation of the county by separating it from Fergus County; Petroleum County was thus created on February 25, 1925, as the last of Montana's 56 counties.
Document 7: Bozeman, Montana: Bozeman is a city in and the county seat of Gallatin County, Montana, United States, in the southwestern part of the state. The 2010 census put Bozeman's population at 37,280 and by 2016 the population rose to 45,250, making it the fourth largest city in the state. It is the principal city of the Bozeman, MT Micropolitan Statistical Area, consisting of all of Gallatin County with a population of 97,304. It is the largest Micropolitan Statistical Area in Montana and is the third largest of all of Montana’s statistical areas.
Document 8: Bridger, Gallatin County, Montana: Bridger is a census-designated place (CDP) in Gallatin County, Montana, United States. It comprises the Bridger Bowl Ski Area and some nearby residences on the eastern side of the Bridger Range in southwestern Montana. As of the 2010 census the Bridger CDP had a population of 30.
Document 9: Flathead County, Montana: Flathead County is a county located in the U.S. state of Montana. As of the 2010 census, the population was 90,928, making it the fourth-most populous county in Montana. Its county seat is Kalispell. The numerical designation for Flathead County (used in the issuance of license plates) is 7. It is south from the Canada–US border of British Columbia.
Document 10: Boyd, Montana: Boyd is a census-designated place and unincorporated community in Carbon County, Montana, United States. As of the 2010 census it had a population of 35. Boyd was a stop on the Northern Pacific Railway en route to Red Lodge. A post office was first established at Boyd on March 12, 1909 with Roland N. Doughty as the town's first postmaster. Since December 3, 1965, the office has operated as a rural station or a CPO of Roberts with the ZIP code of 59013.
Document 11: Silver Bow County, Montana: Silver Bow County is a county in the State of Montana. As of the 2010 census, the population was 34,200. Its county seat is Butte. In 1977, the city and county governments consolidated to form the single entity of Butte-Silver Bow. Additionally, the town of Walkerville is a separate municipality from Butte and is within the county.
Document 12: Mineral County Airport: Mineral County Airport (FAA LID: 9S4) is a county-owned public-use airport located two nautical miles (3.7 km) southeast of the central business district of Superior, a town in Mineral County, Montana, United States. According to the FAA's National Plan of Integrated Airport Systems for 2011-2015, it is categorized as a "general aviation" facility.
Document 13: Butte, Montana: Butte is a city in, and the county seat of Silver Bow County, Montana, United States. In 1977, the city and county governments consolidated to form the sole entity of Butte-Silver Bow. As of the 2010 census, Butte's population was approximately 34,200. Butte is Montana's fifth largest city.
Document 14: De Borgia, Montana: De Borgia is a census-designated place (CDP) in Mineral County, Montana, United States. The population was 69 at the 2000 census.
Document 15: De Borgia Schoolhouse: De Borgia Schoolhouse is a two-story wood frame school located in De Borgia, Montana, United States which was listed on the National Register of Historic Places on December 27, 1979. Constructed in 1908, the schoolhouse was the first two-story building built in the West End of Mineral County and is the only building now standing in De Borgia to survive the Great Fire of 1910. The school closed in 1956, becoming a community center for the town.
ground_truth: United States