{"id": 814743, "name": "Number of states in a region", "unit": "countries", "createdAt": "2023-10-03T14:28:37.000Z", "updatedAt": "2025-03-14T14:57:18.000Z", "coverage": "", "timespan": "1816-2022", "datasetId": 6252, "columnOrder": 0, "shortName": "number_countries", "catalogPath": "grapher/countries/2023-09-29/cow_ssm/cow_ssm_regions#number_countries", "descriptionShort": "Number of states listed in the state system membership list for a given region.", "descriptionProcessing": "We use the state system membership from Correlates of War. We assign each country to a region based on the mapping (using COW codes):\n\n  - Americas: 2-165\n  - Europe: 200-399\n  - Africa: 402-626\n  - Middle East: 630-698\n  - Asia and Oceania: 700-999", "type": "int", "dataChecksum": "16273547166516461175", "metadataChecksum": "7618250601198639302", "datasetName": "States in regions (COW)", "updatePeriodDays": 1800, "datasetVersion": "2023-09-29", "nonRedistributable": false, "display": {"unit": "countries", "numDecimalPlaces": 0}, "schemaVersion": 2, "processingLevel": "minor", "presentation": {"topicTagsLinks": ["State Capacity", "War & Peace"]}, "descriptionKey": ["For the years until 1919, Correlates of War considers a country a sovereign state if it has a population of at least 500,000 people, and is diplomatically recognized by France and the United Kingdom.", "For the years after 1919, a country is considered a sovereign state if it either at any point was a member of the League of Nations or the United Nations, or had a population of at least 500,000 people and was diplomatically recognized by at least two major powers."], "dimensions": {"years": {"values": [{"id": 1816}, {"id": 1817}, {"id": 1818}, {"id": 1819}, {"id": 1820}, {"id": 1821}, {"id": 1822}, {"id": 1823}, {"id": 1824}, {"id": 1825}, {"id": 1826}, {"id": 1827}, {"id": 1828}, {"id": 1829}, {"id": 1830}, {"id": 1831}, {"id": 1832}, {"id": 1833}, {"id": 1834}, {"id": 1835}, {"id": 1836}, {"id": 1837}, {"id": 1838}, {"id": 1839}, {"id": 1840}, {"id": 1841}, {"id": 1842}, {"id": 1843}, {"id": 1844}, {"id": 1845}, {"id": 1846}, {"id": 1847}, {"id": 1848}, {"id": 1849}, {"id": 1850}, {"id": 1851}, {"id": 1852}, {"id": 1853}, {"id": 1854}, {"id": 1855}, {"id": 1856}, {"id": 1857}, {"id": 1858}, {"id": 1859}, {"id": 1860}, {"id": 1861}, {"id": 1862}, {"id": 1863}, {"id": 1864}, {"id": 1865}, {"id": 1866}, {"id": 1867}, {"id": 1868}, {"id": 1869}, {"id": 1870}, {"id": 1871}, {"id": 1872}, {"id": 1873}, {"id": 1874}, {"id": 1875}, {"id": 1876}, {"id": 1877}, {"id": 1878}, {"id": 1879}, {"id": 1880}, {"id": 1881}, {"id": 1882}, {"id": 1883}, {"id": 1884}, {"id": 1885}, {"id": 1886}, {"id": 1887}, {"id": 1888}, {"id": 1889}, {"id": 1890}, {"id": 1891}, {"id": 1892}, {"id": 1893}, {"id": 1894}, {"id": 1895}, {"id": 1896}, {"id": 1897}, {"id": 1898}, {"id": 1899}, {"id": 1900}, {"id": 1901}, {"id": 1902}, {"id": 1903}, {"id": 1904}, {"id": 1905}, {"id": 1906}, {"id": 1907}, {"id": 1908}, {"id": 1909}, {"id": 1910}, {"id": 1911}, {"id": 1912}, {"id": 1913}, {"id": 1914}, {"id": 1915}, {"id": 1916}, {"id": 1917}, {"id": 1918}, {"id": 1919}, {"id": 1920}, {"id": 1921}, {"id": 1922}, {"id": 1923}, {"id": 1924}, {"id": 1925}, {"id": 1926}, {"id": 1927}, {"id": 1928}, {"id": 1929}, {"id": 1930}, {"id": 1931}, {"id": 1932}, {"id": 1933}, {"id": 1934}, {"id": 1935}, {"id": 1936}, {"id": 1937}, {"id": 1938}, {"id": 1939}, {"id": 1940}, {"id": 1941}, {"id": 1942}, {"id": 1943}, {"id": 1944}, {"id": 1945}, {"id": 1946}, {"id": 1947}, {"id": 1948}, {"id": 1949}, {"id": 1950}, {"id": 1951}, {"id": 1952}, {"id": 1953}, {"id": 1954}, {"id": 1955}, {"id": 1956}, {"id": 1957}, {"id": 1958}, {"id": 1959}, {"id": 1960}, {"id": 1961}, {"id": 1962}, {"id": 1963}, {"id": 1964}, {"id": 1965}, {"id": 1966}, {"id": 1967}, {"id": 1968}, {"id": 1969}, {"id": 1970}, {"id": 1971}, {"id": 1972}, {"id": 1973}, {"id": 1974}, {"id": 1975}, {"id": 1976}, {"id": 1977}, {"id": 1978}, {"id": 1979}, {"id": 1980}, {"id": 1981}, {"id": 1982}, {"id": 1983}, {"id": 1984}, {"id": 1985}, {"id": 1986}, {"id": 1987}, {"id": 1988}, {"id": 1989}, {"id": 1990}, {"id": 1991}, {"id": 1992}, {"id": 1993}, {"id": 1994}, {"id": 1995}, {"id": 1996}, {"id": 1997}, {"id": 1998}, {"id": 1999}, {"id": 2000}, {"id": 2001}, {"id": 2002}, {"id": 2003}, {"id": 2004}, {"id": 2005}, {"id": 2006}, {"id": 2007}, {"id": 2008}, {"id": 2009}, {"id": 2010}, {"id": 2011}, {"id": 2012}, {"id": 2013}, {"id": 2014}, {"id": 2015}, {"id": 2016}, {"id": 2017}, {"id": 2018}, {"id": 2019}, {"id": 2020}, {"id": 2021}, {"id": 2022}]}, "entities": {"values": [{"id": 273, "name": "Africa", "code": null}, {"id": 290, "name": "Americas", "code": null}, {"id": 29325, "name": "Asia and Oceania", "code": null}, {"id": 276, "name": "Europe", "code": null}, {"id": 25487, "name": "Middle East", "code": null}, {"id": 355, "name": "World", "code": "OWID_WRL"}]}}, "origins": [{"id": 290, "titleSnapshot": "State System Membership - States", "title": "State System Membership", "descriptionSnapshot": "Provides states' entry and exit dates, country codes, and abbreviations.", "description": "This data set contains the list of states in the international system as updated and distributed by the Correlates of War Project. These data sets identify states, their standard Correlates of War \u201ccountry code\u201d or state number (used throughout the Correlates of War project data sets), state abbreviations, and dates of membership as states and major powers in the international system. Version 2016 extends the temporal domain of the collection through December 2016.\n\nThe Correlates of War project includes a state in the international system from 1816-2016 for the following criteria. Prior to 1920, the entity must have had a population greater than 500,000 and have had diplomatic missions at or above the rank of charge d\u2019affaires with Britain and France. After 1920, the entity must be a member of the League of Nations or the United Nations, or have a population greater than 500,000 and receive diplomatic missions from two major powers.\n\nFind more information in [their codebook](https://correlatesofwar.org/wp-content/uploads/State-System-Membership-Codebook-V2016.pdf)", "producer": "Correlates of War", "citationFull": "Correlates of War Project. 2017. \u201cState System Membership List, v2016.\u201d Online, http://correlatesofwar.org", "attribution": "Correlates of War - State System Membership (2017)", "attributionShort": "COW", "versionProducer": "v2016", "urlMain": "https://correlatesofwar.org/data-sets/state-system-membership/", "urlDownload": "https://correlatesofwar.org/wp-content/uploads/states2016.csv", "dateAccessed": "2023-09-22", "datePublished": "2017-02-20", "license": {"url": "https://correlatesofwar.org/data-sets/", "name": "Correlates of War terms"}}]}