paragraph_text: Dasan-myeon is a subdivision of Goryeong County, Gyeongsangbuk-do, South Korea, in the county's northeast. It is composed of ten "ri". Dasan-myeon looks across the Nakdong River at Daegu, and also borders Seongju County to the north. To the south it is bounded by Goryeong's Seongsan-myeon. A largely rural district, Dasan-myeon is home to about 7,400 people living on 46 square kilometers.

paragraph_text: Vietnam is located on the eastern margin of the Indochinese peninsula and occupies about 331,211.6 square kilometers, of which about 25% was under cultivation in 1987. It borders the Gulf of Thailand, Gulf of Tonkin, and Pacific Sea, alongside China, Laos, and Cambodia. The S - shaped country has a north - to - south distance of 1,650 kilometers and is about 50 kilometers wide at the narrowest point. With a coastline of 3,260 kilometers, excluding islands, Vietnam claims 12 nautical miles (22.2 km; 13.8 mi) as the limit of its territorial waters, an additional 12 nautical miles (22.2 km; 13.8 mi) as a contiguous customs and security zone, and 200 nautical miles (370.4 km; 230.2 mi) as an exclusive economic zone.

paragraph_text: Mare Nectaris ("Sea of Nectar") is a small lunar mare or sea (a volcanic lava plain noticeably darker than the rest of the Moon's surface) located south of Mare Tranquillitatis southwest of Mare Fecunditatis, on the near side of the moon. Montes Pyrenaeus borders the mare to the east and Sinus Asperitatis fuses to its northwestern edge. It is 84,000 square kilometers in size.

paragraph_text: Vila Valqueire is a neighborhood in the West Zone of Rio de Janeiro, Brazil. This neighborhood is located in the borders of North and Western zones, and has a good quality of life with many squares, green places and services.

paragraph_text: Jews in New York City comprise approximately 13 percent of the city's population, making the Jewish community the largest in the world outside of Israel. As of 2014, 1.1 million Jews live in the five boroughs of New York City, and 1.75 million Jews live in New York state overall. Jews have immigrated to New York City since the first settlement in Dutch New Amsterdam in 1654, most notably at the end of the 19th century to the early 20th century, when the Jewish population rose from about 80,000 in 1880 to 1.5 million in 1920. The large Jewish population has led to a significant impact on the culture of New York City. After many decades of decline in the 20th century, the Jewish population of New York City has seen a sharp increase in the 21st century owing to the high birth rate of the Hasidic and Orthodox communities.

paragraph_text: The Pembina River is a tributary of the Red River of the North, approximately long, in southern Manitoba in Canada and northeastern North Dakota in the United States. It drains an area (about 8500 square kilometers) of the prairie country along the Canada–US border, threading the Manitoba-North Dakota border eastward to the Red River. Via the Red River, Lake Winnipeg and the Nelson River, it is part of the watershed of Hudson Bay.

paragraph_text: The Northern Territory (abbreviated as NT) is a federal Australian territory in the central and central northern regions of Australia. It shares borders with Western Australia to the west (129th meridian east), South Australia to the south (26th parallel south), and Queensland to the east (138th meridian east). To the north, the territory is bordered by the Timor Sea, the Arafura Sea and the Gulf of Carpentaria. Despite its large area -- over 1,349,129 square kilometres (520,902 sq mi), making it the third largest Australian federal division -- it is sparsely populated. The Northern Territory's population of 244,000 (2016) makes it the least populous of Australia's eight major states and territories, having fewer than half as many people as Tasmania.

paragraph_text: Jerusalem reached a peak in size and population at the end of the Second Temple Period: The city covered two square kilometers (0.8 sq mi.) and had a population of 200,000. In the five centuries following the Bar Kokhba revolt in the 2nd century, the city remained under Roman then Byzantine rule. During the 4th century, the Roman Emperor Constantine I constructed Christian sites in Jerusalem such as the Church of the Holy Sepulchre.

paragraph_text: The biodiversity of plant species is the highest on Earth with one 2001 study finding a quarter square kilometer (62 acres) of Ecuadorian rainforest supports more than 1,100 tree species. A study in 1999 found one square kilometer (247 acres) of Amazon rainforest can contain about 90,790 tonnes of living plants. The average plant biomass is estimated at 356 ± 47 tonnes per hectare. To date, an estimated 438,000 species of plants of economic and social interest have been registered in the region with many more remaining to be discovered or catalogued. The total number of tree species in the region is estimated at 16,000.

paragraph_text: According to the Library of Virginia "William Selden was born 31 January 1791 in Henrico County, Virginia, to Miles Selden (1752-1811) and Elizabeth Armistead Selden (1752-1833). He was a member for Henrico County in the House of Delegates from 1813 to 1816 and from 1818 to 1821. He later served as Registrar of the Land Office. He married first Maria Eliza Swann (d. 1834) 26 November 1833, and they had one child. He married second Emily Hunter 9 June 1840, and they had eight children. Selden died 7 April 1874."

paragraph_text: Throughout the 19th century, Philadelphia had a variety of industries and businesses, the largest being textiles. Major corporations in the 19th and early 20th centuries included the Baldwin Locomotive Works, William Cramp and Sons Ship and Engine Building Company, and the Pennsylvania Railroad. Industry, along with the U.S. Centennial, was celebrated in 1876 with the Centennial Exposition, the first official World's Fair in the United States. Immigrants, mostly Irish and German, settled in Philadelphia and the surrounding districts. The rise in population of the surrounding districts helped lead to the Act of Consolidation of 1854, which extended the city limits of Philadelphia from the 2 square miles of present-day Center City to the roughly 130 square miles of Philadelphia County.

paragraph_text: Khokhovka includes 23 unique monuments from the 17th – early 20th centuries. The territory is about 35 ha with many wooden constructions and buildings that were moved here from different places of the Perm Krai.

paragraph_text: The Great Depression was a severe worldwide economic depression that took place mostly during the 1930s, originating in the United States. The timing of the Great Depression varied across nations; in most countries it started in 1929 and lasted until 1941. It was the longest, deepest, and most widespread depression of the 20th century. In the 21st century, the Great Depression is commonly used as an example of how far the world's economy can decline.

paragraph_text: By the beginning of the 20th century, the city's population had reached 85,050 in 5 square miles (13 km2), making it the most densely populated city in the Southern United States. In 1900, the Census Bureau reported Richmond's population as 62.1% white and 37.9% black. Freed slaves and their descendants created a thriving African-American business community, and the city's historic Jackson Ward became known as the "Wall Street of Black America." In 1903, African-American businesswoman and financier Maggie L. Walker chartered St. Luke Penny Savings Bank, and served as its first president, as well as the first female bank president in the United States. Today, the bank is called the Consolidated Bank and Trust Company, and it is the oldest surviving African-American bank in the U.S. Other figures from this time included John Mitchell, Jr. In 1910, the former city of Manchester was consolidated with the city of Richmond, and in 1914, the city annexed Barton Heights, Ginter Park, and Highland Park areas of Henrico County. In May 1914, Richmond became the headquarters of the Fifth District of the Federal Reserve Bank.

paragraph_text: Estonia's land border with Latvia runs 267 kilometers; the Russian border runs 290 kilometers. From 1920 to 1945, Estonia's border with Russia, set by the 1920 Tartu Peace Treaty, extended beyond the Narva River in the northeast and beyond the town of Pechory (Petseri) in the southeast. This territory, amounting to some 2,300 square kilometres (888 sq mi), was incorporated into Russia by Stalin at the end of World War II. For this reason the borders between Estonia and Russia are still not defined.

paragraph_text: Millennials (also known as Generation Y) are the generational demographic cohort following Generation X. There are no precise dates for when this cohort starts or ends; demographers and researchers typically use the early 1980s as starting birth years and the mid-1990s to early 2000s as ending birth years. Millennials are sometimes referred to as ``echo boomers ''due to a major surge in birth rates in the 1980s and 1990s, and because millennials are often the children of the baby boomers. The 20th - century trend toward smaller families in developed countries continued, however, so the relative impact of the`` baby boom echo'' was generally less pronounced than the post -- World War II baby boom.

paragraph_text: 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.

paragraph_text: Harry Kitten and Tucker Mouse is a children's book written by George Selden and illustrated by Garth Williams. It is the prequel to "The Cricket in Times Square". Dell Publishing originally published the book in 1986.

paragraph_text: The rural Plains have lost a third of their population since 1920. Several hundred thousand square miles (several hundred thousand square kilometers) of the Great Plains have fewer than 6 inhabitants per square mile (2.3 inhabitants per square kilometer)—the density standard Frederick Jackson Turner used to declare the American frontier "closed" in 1893. Many have fewer than 2 inhabitants per square mile (0.77 inhabitants per square kilometer). There are more than 6,000 ghost towns in the state of Kansas alone, according to Kansas historian Daniel Fitzgerald. This problem is often exacerbated by the consolidation of farms and the difficulty of attracting modern industry to the region. In addition, the smaller school-age population has forced the consolidation of school districts and the closure of high schools in some communities. The continuing population loss has led some to suggest that the current use of the drier parts of the Great Plains is not sustainable, and there has been a proposal - the "Buffalo Commons" - to return approximately 139,000 square miles (360,000 km2) of these drier parts to native prairie land.

paragraph_text: Taihu, literally the Great Lake, also known as Lake Tai or Lake Taihu, rest in the Yangtze Delta plain, is one of the largest freshwater lakes in China. The lake belongs to Jiangsu and the southern shore forms its border with Zhejiang. With an area of 2,250 square kilometers (869 sq mi) and an average depth of 2 meters (6.6 ft), it is the third-largest freshwater lake in China, after Poyang and Dongting. The lake houses about 90 islands, ranging in size from a few square meters to several square kilometers.

Question: At the start of the 20th Century, how many square kilometers was the city that shares a border with the county where William Selden was born?
Answer: 13