Question: Prior to serving as a member of the Provisional Congress of the Confederate States from Mississippi, William S. Barry served as a member of which majority-black district in the state, covering much of western Mississippi?

full_context: Document 1: Jefferson Davis: Jefferson Davis (born Jefferson Finis Davis; June 3, 1808 – December 6, 1889) was an American politician who served as the President of the Confederate States from 1861 to 1865. He was a member of the Democratic Party who represented Mississippi in the United States Senate and the House of Representatives prior to becoming president of the Confederacy. He was the 23rd United States Secretary of War, serving under U.S. President Franklin Pierce from 1853 to 1857.
Document 2: Mississippi: Mississippi is a state in the southern region of the United States, with part of its southern border formed by the Gulf of Mexico. Its western border is formed by the Mississippi River.
Document 3: John M. Barry: John M. Barry (b. 1947) is an American author and historian, perhaps best known for his award-winning books on the Great Mississippi Flood of 1927, the influenza pandemic of 1918, and the development of the modern form of the ideas of separation of church and state and individual liberty. His most recent book is "Roger Williams and the Creation of the American Soul: Church, State, and the Birth of Liberty" (Viking 2012). He has also been honored by the National Academies of Science, has served on advisory boards and committees at MIT and Johns Hopkins, is Distinguished Scholar and adjunct faculty at Tulane University, and was subject of a cover story in The New York Times Magazine Oct. 5, 2014, https://www.nytimes.com/interactive/2014/10/02/magazine/mag-oil-lawsuit.html?_r=2
Document 4: Clarksdale, Mississippi: Clarksdale is a city in Coahoma County, Mississippi, and seat of the county. The western boundary of the county is formed by the Mississippi River. Located in the Mississippi Delta region, Clarksdale is an agricultural and trading center. It has been home to many blues musicians. Clarksdale is named after John Clark, who founded the city in the mid-19th century.
Document 5: Mississippi's 2nd congressional district: Mississippi's 2nd congressional district (MS-2) is the only majority-black district in the state, covering much of western Mississippi. The district includes most of Jackson, the riverfront cities of Greenville and Vicksburg, and the interior market cities of Clarksdale, Greenwood, and Clinton. The district is approximately 275 mi long, 180 mi wide and borders the Mississippi River; it encompasses much of the Mississippi Delta, and a total of 15 counties and parts of several others.
Document 6: Francis S. Bartow: Francis S. Bartow (born Francis Stebbins Bartow; September 6, 1816 – July 21, 1861) was a licensed attorney turned politician, serving two terms in the United States House of Representatives and becoming a political leader of the Confederate States of America. Bartow was also a colonel in the Georgia Militia commanding the 21st Oglethorpe Light Infantry during the early months of the American Civil War. Bartow was a delegate from Georgia's 1st congressional district to the Southern Convention in Montgomery, Alabama becoming an inaugurating member of the Confederate Provisional Congress—leading efforts to prepare defensive forces for an impending federal invasion which did occur, protracting into The American Civil War of 1861–65.
Document 7: Provisional Congress of the Confederate States: The Provisional Congress of the Confederate States, also known as the Provisional Congress of the Confederate States of America, was a congress of deputies and delegates called together from the Southern States which became the governing body of the Provisional Government of the Confederate States of America (CSA) from February 4, 1861, to February 17, 1862. It sat in Montgomery, Alabama, until May 20, 1861, when it adjourned to meet in Richmond, Virginia, on July 20, 1861. It added new members as other states seceded and directed the election on November 6, 1861, at which a permanent government was elected.
Document 8: William S. Barry: William S. Barry (born William Taylor Sullivan Barry; December 10, 1821 – January 29, 1868) was an American politician who served as member of the Provisional Congress of the Confederate States from Mississippi. Prior to this Barry served as a member of the U.S. House of Representatives from Mississippi's 2nd congressional district.
Document 9: Black Creek Wilderness: Black Creek Wilderness is a 5052 acre wilderness area in the U.S. state of Mississippi. Located within the De Soto National Forest, Mississippi's largest wilderness lies in the broad valley of Black Creek, stained a deep caramel color by the tannic acid of decaying vegetation. The upland areas protect significant areas of longleaf pine forest, while the river creates bottomland hardwoods and shorelines with sand bars. It is therefore an important representation of typical coastal plain ecosystems that existed before forests were cleared and the rivers dammed. The Pascagoula River is nationally significant as one of the largest unimpeded rivers remaining in the lower 48 states. Rare species include the Pearl darter and the Yellow-blotched map turtle, both found only in this river and its tributaries. This wilderness area is surrounded by De Soto National Forest, which is also one of the nation's most important areas of coastal plain ecosystems.
Document 10: Mississippi River: The Mississippi River is the chief river of the second-largest drainage system on the North American continent, second only to the Hudson Bay drainage system. Flowing entirely in the United States (although its drainage basin reaches into Canada), it rises in northern Minnesota and meanders slowly southwards for 2320 mi to the Mississippi River Delta at the Gulf of Mexico. With its many tributaries, the Mississippi's watershed drains all or parts of 31 U.S. states and 2 Canadian provinces between the Rocky and Appalachian Mountains. The Mississippi ranks as the fourth-longest and fifteenth-largest river in the world by discharge. The river either borders or passes through the states of Minnesota, Wisconsin, Iowa, Illinois, Missouri, Kentucky, Tennessee, Arkansas, Mississippi, and Louisiana.
Document 11: Mississippi Delta: The Mississippi Delta is the distinctive northwest section of the U.S. state of Mississippi which lies between the Mississippi and Yazoo Rivers. The region has been called "The Most Southern Place on Earth" ("Southern" in the sense of "characteristic of its region, the American South"), because of its unique racial, cultural, and economic history. It is 200 miles long and 87 miles across at its widest point, encompassing circa 4,415,000 acres, or, some 7,000 square miles of alluvial floodplain. Originally covered in hardwood forest across the bottomlands, it was developed as one of the richest cotton-growing areas in the nation before the American Civil War (1861-1865). The region attracted many speculators who developed land along the riverfronts for cotton plantations; they became wealthy planters dependent on the labor of black slaves, who comprised the vast majority of the population in these counties well before the Civil War, often twice the number of whites.
Document 12: Bill Barrett: William E. Barrett (February 9, 1929 – September 20, 2016) was a Republican politician from Nebraska who served five terms in the United States House of Representatives from 1991 to 2001 as the congressman for Nebraska's third congressional district.
Document 13: Maine's 2nd congressional district: Maine's 2nd congressional district is a congressional district in the U.S. state of Maine. Covering 27326 sqmi , it comprises nearly 80% of the state's total land area. It is the largest district east of the Mississippi River and the 24th-largest overall. It is the second-most rural district in the United States, with 72.11% of its population in rural areas, behind only Kentucky's 5th congressional district.
Document 14: Rivercrest School District: Rivercrest School District, formerly Southern Mississippi County School District, is a public school district based in Rivercrest High School in unincorporated Mississippi County, Arkansas, United States, in proximity to Marie and with a Wilson postal address. The school district provides early childhood, elementary and secondary education for more than 1,300 prekindergarten through grade 12 students and employs more than 220 staff (including faculty) at its two facilities. The district encompasses 363.77 mi2 of land in Mississippi County.
Document 15: William Henry Wallace: William Henry Wallace (March 24, 1827 – March 21, 1901) was a Confederate States Army brigadier general during the American Civil War (Civil War). Before the Civil War, he was a planter, newspaper publisher, lawyer and South Carolina legislator in 1860 who supported the state calling a secession convention. He served in the Eastern Theater of the American Civil War, including service as a brigade commander in the Army of Northern Virginia. After the Civil War, he was a lawyer, planter, South Carolina legislator and circuit judge.
ground_truth: Mississippi's 2nd congressional district