Question: When did the city that contains the administrative territorial entity that houses Montrose become the capital of Virginia?

full_context: Document 1: Richmond, Virginia: Richmond is located at the fall line of the James River, 44 miles (71 km) west of Williamsburg, 66 miles (106 km) east of Charlottesville, and 98 miles (158 km) south of Washington, D.C. Surrounded by Henrico and Chesterfield counties, the city is located at the intersections of Interstate 95 and Interstate 64, and encircled by Interstate 295 and Virginia State Route 288. Major suburbs include Midlothian to the southwest, Glen Allen to the north and west, Short Pump to the west and Mechanicsville to the northeast.
Document 2: Richmond, Virginia: Richmond's economy is primarily driven by law, finance, and government, with federal, state, and local governmental agencies, as well as notable legal and banking firms, located in the downtown area. The city is home to both the United States Court of Appeals for the Fourth Circuit, one of 13 United States courts of appeals, and the Federal Reserve Bank of Richmond, one of 12 Federal Reserve Banks. Dominion Resources and MeadWestvaco, Fortune 500 companies, are headquartered in the city, with others in the metropolitan area.
Document 3: East Highland Park, Virginia: East Highland Park is a census-designated place (CDP) in Henrico County, Virginia, in the United States. The population was 14,796 at the 2010 census.
Document 4: Henrico County, Virginia: Richmond Raceway is in the central portion of Henrico County near Mechanicsville, just north of the Richmond city limits. The raceway seats approximately 60,000 people and holds two NASCAR doubleheader race weekends per year. Additionally, Richmond International Airport is located in the eastern portion of Henrico County in Sandston. Top private employers in the county include Capital One, Bon Secours Richmond Health System, and Anthem.
Document 5: Laurel, Virginia: Laurel is a census-designated place (CDP) in Henrico County, Virginia. The population was 16,713 at the 2010 United States Census. It is the county seat of Henrico County.
Document 6: Montrose, Virginia: Montrose is a census-designated place (CDP) in Henrico County, Virginia, United States. The population was 7,993 at the 2010 census.
Document 7: Richmond, Virginia: Richmond (/ ˈrɪtʃmənd / RICH - mənd) is the capital of the Commonwealth of Virginia. It is the center of the Richmond Metropolitan Statistical Area (MSA) and the Greater Richmond Region. It was incorporated in 1742, and has been an independent city since 1871.
Document 8: Richmond, Virginia: Richmond is located at 37°32′N 77°28′W﻿ / ﻿37.533°N 77.467°W﻿ / 37.533; -77.467 (37.538, −77.462). According to the United States Census Bureau, the city has a total area of 62 square miles (160 km2), of which 60 square miles (160 km2) is land and 2.7 square miles (7.0 km2) of it (4.3%) is water. The city is located in the Piedmont region of Virginia, at the highest navigable point of the James River. The Piedmont region is characterized by relatively low, rolling hills, and lies between the low, sea level Tidewater region and the Blue Ridge Mountains. Significant bodies of water in the region include the James River, the Appomattox River, and the Chickahominy River.
Document 9: Montrose County Courthouse: The Montrose County Courthouse stands three stories high in downtown Montrose, Colorado and was built in the Classical Revival style from locally quarried sandstone. It was listed on the National Register of Historic Places in 1994.
Document 10: Richmond, Virginia: On 17 April 1861, five days after the Confederate attack on Fort Sumter, the legislature voted to secede from the United States and joined the Confederacy. Official action came in May, after the Confederacy promised to move its national capital to Richmond. The city was at the end of a long supply line, which made it somewhat difficult to defend, although supplies continued to reach the city by canal and wagon for years, since it was protected by the Army of Northern Virginia and arguably the Confederacy's best troops and commanders. It became the main target of Union armies, especially in the campaigns of 1862 and 1864-5.
Document 11: Raid on Richmond: Prior to the beginning of the raid, Thomas Jefferson, the then - Governor of Virginia, had moved the capital of Virginia from Williamsburg to Richmond, because of its strategically central, defensible location. In the event of an attack, Jefferson moved all of the town's military supplies to a foundry five miles outside of Richmond. Little did Jefferson know how big of an attack would soon follow.
Document 12: Richmond, Virginia: Law and finance have long been driving forces in the economy. The city is home to both the United States Court of Appeals for the Fourth Circuit, one of 13 United States courts of appeals, and the Federal Reserve Bank of Richmond, one of 12 Federal Reserve Banks, as well as offices for international companies such as Genworth Financial, CapitalOne, Philip Morris USA, and numerous other banks and brokerages. Richmond is also home to four of the largest law firms in the United States: Hunton & Williams, McGuireWoods, Williams Mullen, and LeClairRyan. Another law firm with a major Richmond presence is Troutman Sanders, which merged with Richmond-based Mays & Valentine LLP in 2001.
Document 13: Richmond, Virginia: Richmond is home to the rapidly developing Virginia BioTechnology Research Park, which opened in 1995 as an incubator facility for biotechnology and pharmaceutical companies. Located adjacent to the Medical College of Virginia (MCV) Campus of Virginia Commonwealth University, the park currently[when?] has more than 575,000 square feet (53,400 m2) of research, laboratory and office space for a diverse tenant mix of companies, research institutes, government laboratories and non-profit organizations. The United Network for Organ Sharing, which maintains the nation's organ transplant waiting list, occupies one building in the park. Philip Morris USA opened a $350 million research and development facility in the park in 2007. Once fully developed, park officials expect the site to employ roughly 3,000 scientists, technicians and engineers.
Document 14: Richmond, Virginia: The site of Richmond had been an important village of the Powhatan Confederacy, and was briefly settled by English colonists from Jamestown in 1609, and in 1610–1611. The present city of Richmond was founded in 1737. It became the capital of the Colony and Dominion of Virginia in 1780. During the Revolutionary War period, several notable events occurred in the city, including Patrick Henry's "Give me liberty or give me death" speech in 1775 at St. John's Church, and the passage of the Virginia Statute for Religious Freedom written by Thomas Jefferson. During the American Civil War, Richmond served as the capital of the Confederate States of America. The city entered the 20th century with one of the world's first successful electric streetcar systems, as well as a national hub of African-American commerce and culture, the Jackson Ward neighborhood.
Document 15: Montrose Manor, Pennsylvania: Montrose Manor is a census-designated place in Spring and Cumru Townships in Berks County, Pennsylvania. It is located along US Route 222 just north of Mohnton, Pennsylvania. In the 2010 census the population was recorded as 604 residents.
ground_truth: 1742
sub_queries: Montrose >> located in the administrative territorial entity Answer: Henrico County
Henrico County >> contains administrative territorial entity Answer: Richmond
when did Richmond became the capital of virginia Answer: 1742