Question: Florence Reece wrote a popular song related to the Harlan County strike, where did this strike take place?

full_context: Document 1: Harlan County, USA: Harlan County, USA is a 1976 Oscar-winning documentary film covering the "Brookside Strike", an effort of 180 coal miners and their wives against the Duke Power Company-owned Eastover Coal Company's Brookside Mine and Prep Plant in Harlan County, southeast Kentucky in 1973. Directed and produced by Barbara Kopple, who has long been an advocate of workers' rights, "Harlan County, U.S.A." is less ambivalent in its attitude toward unions than her later "American Dream", the account of the Hormel Foods strike in Austin, Minnesota in 1985-86.
Document 2: Jack Monroe (song): "Jack Monroe" (Roud 268 and Laws N7), also known as "Jack Munro," "Jackie Monroe," "Jacky Robinson", "Jack-A-Roe," "Jackaroe," "Jackaro," "Jackie Frazier," "Jack the Sailor," "Jack Went A-Sailing," "The Love of Polly and Jack Monroe", "The Maid of Chatham", among other titles, is a traditional ballad of uncertain (though presumably British) origin. American broadsides of the song date back to around 1830. The song is a staple of the folk rock repertoire and has been performed by Joan Baez, Bob Dylan, and more commonly, The Grateful Dead (as "Jack-A-Roe"). In 1931, Florence Reece used this tune for her song "Which Side Are You On?". Also performed by Melora Creager of Rasputina on Ancient Cross-Dressing Songs.
Document 3: West Virginia coal wars: The West Virginia coal wars (1912–21), also known as the mine wars, arose out of a dispute between coal companies and miners. The first workers strike, in West Virginia, was the Cabin Creek and Paint Creek strike of 1912-1913. With help from Mary "Mother" Jones, an important figure in unionizing the mine workers, the miners demanded better pay, better work conditions, the right to trade where they pleased (ending the practice of forcing miners to buy from company-owned stores), and recognition of the United Mine Workers (UMW). The mining companies, however, refused to meet the demands of the workers and instead hired Baldwin-Felts Agents, equipped with high-powered rifles, to guard the mines, but more important to be strikebreakers. After the Agents arrived, the miners either moved out or were evicted from the houses they had been renting from the coal companies, moving into coal camps that were being supported by the Union. Approximately 35,000 people lived in these coal camps. It wasn't until a month after the strike began that it became hostile with the arrival of the Baldwin-Felts Agents who provoked the miners. The union began supplying miners with weapons: 6 machine guns, 1,000 high-powered rifles, and 50,000 rounds of ammunition.
Document 4: Fannie Lou Hamer: Fannie Lou Hamer ( ; born Fannie Lou Townsend; October 6, 1917 – March 14, 1977) was an American voting rights activist, a leader in the Civil Rights Movement, and philanthropist who worked primarily in Mississippi. She was instrumental in organizing Mississippi's Freedom Summer for the Student Nonviolent Coordinating Committee (SNCC). She was the vice-chair of the Mississippi Freedom Democratic Party, which she represented at the 1964 Democratic National Convention in Atlantic City, New Jersey.
Document 5: Harlan County War: The Harlan County War, or Bloody Harlan, was a series of coal mining-related skirmishes, executions, bombings, and strikes (both attempted and realized) that took place in Harlan County, Kentucky, during the 1930s. The incidents involved coal miners and union organizers on one side and coal firms and law enforcement officials on the other. The question at hand: the rights of Harlan County coal miners to organize their workplaces and better their wages and working conditions. It was a nearly decade-long conflict, lasting from 1931 to 1939. Before its conclusion, two acclaimed folk singers would emerge, state and federal troops would occupy the county more than half a dozen times, an indeterminate number of miners, deputies, and bosses would be killed, union membership would oscillate wildly, and workers in the nation's most anti-labor coal county would ultimately be represented by a union.
Document 6: Florence Reece: Florence Reece (1900–1986) was an American social activist, poet, and folksong writer. She is best known for the song ""Which Side Are You On?"" which she wrote in 1931 during the Harlan County strike.
Document 7: Hazel Dickens: Hazel Jane Dickens (June 1, 1935 – April 22, 2011) was an American bluegrass singer, songwriter, double bassist and guitarist. Her music was characterized not only by her high, lonesome singing style, but also by her provocative pro-union, feminist songs. Cultural blogger John Pietaro noted that "Dickens didn’t just sing the anthems of labor, she lived them and her place on many a picket line, staring down gunfire and goon squads, embedded her into the cause." "The New York Times" extolled her as "a clarion-voiced advocate for coal miners and working people and a pioneer among women in bluegrass music." With Alice Gerrard, Dickens was one of the first women to record a bluegrass album.
Document 8: Battle of Blair Mountain: The Battle of Blair Mountain was the largest labor uprising in United States history and one of the largest, best-organized, and most well-armed uprisings since the American Civil War. For five days in late August and early September 1921, in Logan County, West Virginia, some 10,000 armed coal miners confronted 3,000 lawmen and strikebreakers, called the Logan Defenders, who were backed by coal mine operators during an attempt by the miners to unionize the southwestern West Virginia coalfields. The battle ended after approximately one million rounds were fired, and the United States Army intervened by presidential order.
Document 9: Coal Wars: The Coal Wars, or the Coal Mine Wars, were a series of armed labor conflicts in the United States, roughly between 1890 and 1930. Although they occurred mainly in the East, particularly in Appalachia, there was a significant amount of violence in Colorado after the turn of the century.
Document 10: Zilphia Horton: Zilphia Horton (April 14, 1910 – April 11, 1956) was an American musician, community organizer, educator, Civil Rights activist, and folklorist. She is best known for her work with her husband Myles Horton at the Highlander Folk School where she is generally credited with turning such songs as "We Shall Overcome", "Keep Your Eyes on the Prize," "We Shall Not Be Moved," and "This Little Light of Mine" from hymns into songs of the Civil Rights Movement.
Document 11: Coal Creek War: The Coal Creek War was an early 1890s armed labor uprising in the southeastern United States that took place primarily in Anderson County, Tennessee. This labor conflict ignited during 1891 when coal mine owners in the Coal Creek watershed began to remove and replace their company-employed, private coal miners then on the payroll with convict laborers leased out by the Tennessee state prison system.
Document 12: Which Side Are You On?: "Which Side Are You On?" is a song written in 1931 by Florence Reece, the wife of Sam Reece, a union organizer for the United Mine Workers in Harlan County, Kentucky.
Document 13: Battle of Evarts: The Battle of Evarts is the name given to a mining strike and ensuing violence that occurred in Harlan County, Kentucky, in 1931. In February 1931 The Harlan County Coal Co. cut wages for its employees. The United Mine Workers union responded by holding a rally in Pineville, drawing over 2,000 attendees. This and other wage cuts and firings led to a strike, and on May 5 Sheriff Jim Daniels (who was reportedly on the payroll of the Black Mountain Coal Co.) and "three carloads of deputies armed with machine guns, sawed off shotguns and rifles drove into Evarts" to confront the striking miners. It is unclear who fired first, but after the battle Jim Daniels, two of his deputies and one miner had died. Eventually Gov. Flem D. Sampson called in the National Guard to stop the strike. It ended in June after several deaths and arrests.
Document 14: Where Have All the Flowers Gone?: "Where Have All the Flowers Gone?" is a modern folk-style song. The melody and the first three verses were written by Pete Seeger in 1955 and published in "Sing Out!" magazine. Additional verses were added in May 1960 by Joe Hickerson, who turned it into a circular song.
Document 15: Solidarity Forever: "Solidarity Forever", written by Ralph Chaplin in 1915, is perhaps the most famous union anthem. It is sung to the tune of "John Brown's Body" and "The Battle Hymn of the Republic". Although it was written as a song for the Industrial Workers of the World (IWW), other union movements, such as the AFL-CIO, have adopted the song as their own. The song has been performed by musicians such as Utah Phillips, Pete Seeger, and was redone by Emcee Lynx and The Nightwatchman. It is still commonly sung at union meetings and rallies in the United States, Australia and Canada, and has also been sung at conferences of the Australian Labor Party and the Canadian New Democratic Party. This may have also inspired the hymn of the consumer cooperative movement, "The Battle Hymn of Cooperation", which is sung to the same tune.
ground_truth: Harlan County, Kentucky