Question: When was the foundation of the city where George Treat resided?

full_context: Document 1: History of San Francisco: The earliest evidence of human habitation in what is now the city of San Francisco dates to 3000 BC. Native Americans who settled in this region found the bay to be a resource for hunting and gathering, leading to the establishment of many small villages. Collectively, these early Native Americans are now known as the Ohlone, and the language they spoke belonged to the Miwok family. Their trade patterns included places as far away as Baja California, the Mojave Desert and Yosemite.
Document 2: History of rail transportation in the United States: Railroads played a large role in the development of the United States from the industrial revolution in the North - east (1810 -- 1850) to the settlement of the West (1850 -- 1890). The American railroad mania began with the Baltimore and Ohio Railroad in 1826 and flourished until the Panic of 1873 bankrupted many companies and temporarily ended growth.
Document 3: San Francisco: San Francisco was founded on June 29, 1776, when colonists from Spain established Presidio of San Francisco at the Golden Gate and Mission San Francisco de Asís a few miles away, all named for St. Francis of Assisi. The California Gold Rush of 1849 brought rapid growth, making it the largest city on the West Coast at the time. San Francisco became a consolidated city - county in 1856. After three - quarters of the city was destroyed by the 1906 earthquake and fire, San Francisco was quickly rebuilt, hosting the Panama - Pacific International Exposition nine years later. In World War II, San Francisco was a major port of embarkation for service members shipping out to the Pacific Theater. It then became the birthplace of the United Nations in 1945. After the war, the confluence of returning servicemen, massive immigration, liberalizing attitudes, along with the rise of the ``hippie ''counterculture, the Sexual Revolution, the Peace Movement growing from opposition to United States involvement in the Vietnam War, and other factors led to the Summer of Love and the gay rights movement, cementing San Francisco as a center of liberal activism in the United States. Politically, the city votes strongly along liberal Democratic Party lines.
Document 4: San Francisco Mint: The San Francisco Mint is a branch of the United States Mint and was opened in 1854 to serve the gold mines of the California Gold Rush. It quickly outgrew its first building and moved into a new one in 1874. This building, the Old United States Mint, also known affectionately as The Granite Lady, is one of the few that survived the great 1906 San Francisco earthquake. It served until 1937, when the present facility was opened.
Document 5: Richmond, Virginia: Richmond emerged a decade after the smoldering rubble of the Civil War to resume its position as an economic powerhouse, with iron front buildings and massive brick factories. Canal traffic peaked in the 1860s and slowly gave way to railroads, allowing Richmond to become a major railroad crossroads, eventually including the site of the world's first triple railroad crossing. Tobacco warehousing and processing continued to play a role, boosted by the world's first cigarette-rolling machine, invented by James Albert Bonsack of Roanoke in 1880/81. Contributing to Richmond's resurgence was the first successful electrically powered trolley system in the United States, the Richmond Union Passenger Railway. Designed by electric power pioneer Frank J. Sprague, the trolley system opened its first line in 1888, and electric streetcar lines rapidly spread to other cities across the country. Sprague's system used an overhead wire and trolley pole to collect current, with electric motors on the car's trucks. In Richmond, the transition from streetcars to buses began in May 1947 and was completed on November 25, 1949.
Document 6: International Settlement (San Francisco): International Settlement was a relatively short lived entertainment district within San Francisco, located along a one block stretch of Pacific Avenue between Kearny and Montgomery Streets, whose popularity lasted from 1939 to 1960.
Document 7: Jasper O'Farrell: Jasper O'Farrell (1817–1875) was the first surveyor for San Francisco. He designed the "grand promenade" that became today's Market Street. O'Farrell Street in San Francisco is named after him.
Document 8: San Francisco: San Francisco is located on the West Coast of the United States at the north end of the San Francisco Peninsula and includes significant stretches of the Pacific Ocean and San Francisco Bay within its boundaries. Several picturesque islands—Alcatraz, Treasure Island and the adjacent Yerba Buena Island, and small portions of Alameda Island, Red Rock Island, and Angel Island—are part of the city. Also included are the uninhabited Farallon Islands, offshore in the Pacific Ocean. The mainland within the city limits roughly forms a "seven-by-seven-mile square", a common local colloquialism referring to the city's shape, though its total area, including water, is nearly .
Document 9: George Treat: George Treat (1819–1907) was an early Gold Rush-era pioneer in the Mission District, of San Francisco, a businessman, abolitionist, a member of the first Committee of Vigilance of San Francisco, and horse racing enthusiast. He was influential to the early physical development of the Mission District and its eventual shift to urbanization. Treat was responsible for the construction and management of the Pioneer Race Course, a horse racing track built in San Francisco in 1851 and in helping with the creation of the San Francisco-San Jose Railway when he sold the land.
Document 10: George W. Minns: George Washington Minns (October 6, 1813 in Boston, Massachusetts – January 14, 1895 in Brookline, Massachusetts) and graduated from Harvard College with the class of 1836 and received a law degree from the Howard Dane Law School of Harvard. He practiced law in Massachusetts for several years before moving to California. After the Gold Rush caused the collapse of his law practice and Minns lost all of his savings, he became a teacher at the Union Grammar School, the first California high school, and became principal of the Normal School the following year. He was an American teacher, notable for running the Minns Evening Normal School, which was established in San Francisco, California, in 1857 in order to train teachers for the city's public school system. His normal school, named the California State Normal School, was the first publicly funded institution of higher learning in the state. George Minns was principal of the school from 1857-1862 and 1865-1866. The California State Normal School was transferred to the State of California in 1862, and is now known as San José State University.
Document 11: William Chandler (businessman): Chandler participated in several business ventures and abolitionist societies with Thomas Garrett, a Wilmington merchant and stationmaster on the Underground Railroad.
Document 12: San Jose, California: San Jose is home to several colleges and universities. The largest is San Jose State University, which was founded by the California legislature in 1862 as the California State Normal School, and is the founding campus of the California State University (CSU) system. Located in downtown San Jose since 1870, the university enrolls approximately 30,000 students in over 130 different bachelor's and master's degree programs. The school enjoys a good academic reputation, especially in the fields of engineering, business, art and design, and journalism, and consistently ranks among the top public universities in the western region of the United States. San Jose State is one of only three Bay Area schools that fields a Football Bowl Subdivision (FBS) Division I college football team; Stanford University and U.C. Berkeley are the other two.
Document 13: San Diego: San Diego has been called ``the birthplace of California ''. Historically home to the Kumeyaay people, it was the first site visited by Europeans on what is now the West Coast of the United States. Upon landing in San Diego Bay in 1542, Juan Rodríguez Cabrillo claimed the area for Spain, forming the basis for the settlement of Alta California 200 years later. The Presidio and Mission San Diego de Alcalá, founded in 1769, formed the first European settlement in what is now California. In 1821, San Diego became part of the newly independent Mexico, which reformed as the First Mexican Republic two years later. California became part of the United States in 1848 following the Mexican -- American War and was admitted to the union as a state in 1850.
Document 14: San Francisco: San Francisco (initials SF) (/ ˌsæn frənˈsɪskoʊ /, Spanish for Saint Francis; Spanish: (san franˈsisko)), officially the City and County of San Francisco, is the cultural, commercial, and financial center of Northern California. The consolidated city - county covers an area of about 47.9 square miles (124 km), mostly at the north end of the San Francisco Peninsula in the San Francisco Bay Area. It is the fourth-most populous city in California, and the 13th-most populous in the United States, with a 2016 census - estimated population of 870,887. The population is projected to reach 1 million by 2033. As of 2016, San Francisco County was the 7th highest - income county in the United States, with a per capita personal income of $110,418.
Document 15: San Francisco: Upon independence from Spain in 1821, the area became part of Mexico. Under Mexican rule, the mission system gradually ended, and its lands became privatized. In 1835, Englishman William Richardson erected the first independent homestead, near a boat anchorage around what is today Portsmouth Square. Together with Alcalde Francisco de Haro, he laid out a street plan for the expanded settlement, and the town, named Yerba Buena, began to attract American settlers. Commodore John D. Sloat claimed California for the United States on July 7, 1846, during the Mexican–American War, and Captain John B. Montgomery arrived to claim Yerba Buena two days later. Yerba Buena was renamed San Francisco on January 30 of the next year, and Mexico officially ceded the territory to the United States at the end of the war. Despite its attractive location as a port and naval base, San Francisco was still a small settlement with inhospitable geography.
ground_truth: June 29, 1776
sub_queries: George Treat >> residence Answer: San Francisco
when was the city of San Francisco founded Answer: June 29, 1776