Question: Who was the conflict between in the strife of bleeding, in the state that contains the geographic center of North America?

full_context: Document 1: American Civil War: The American Civil War (commonly known as the Civil War in the United States) was fought in the United States from 1861 to 1865. The result of a long - standing controversy over slavery, war broke out in April 1861, when Confederates attacked Fort Sumter in South Carolina, shortly after President Abraham Lincoln was inaugurated. The nationalists of the Union proclaimed loyalty to the U.S. Constitution. They faced secessionists of the Confederate States of America, who advocated for states' rights to travel with slave attendants in the Americas or abolished tariffs on cotton and imports.
Document 2: American Civil War: The American Civil War (also known by other names) was a war fought in the United States from 1861 to 1865. As a result of the long - standing controversy over slavery, war broke out in April 1861, when Confederate forces attacked Fort Sumter in South Carolina, shortly after U.S. President Abraham Lincoln was inaugurated. The nationalists of the Union proclaimed loyalty to the U.S. Constitution. They faced secessionists of the Confederate States, who advocated for states' rights to expand slavery.
Document 3: North Dakota: North Dakota is in the U.S. region known as the Great Plains. The state shares the Red River of the North with Minnesota to the east. South Dakota is to the south, Montana is to the west, and the Canadian provinces of Saskatchewan and Manitoba are to the north. North Dakota is situated near the middle of North America with a stone marker in Rugby, North Dakota marking the ``Geographic Center of the North American Continent ''. With an area of 70,762 square miles (183,273 km), North Dakota is the 19th largest state.
Document 4: Military history of the United States: Sectional tensions had long existed between the states located north of the Mason–Dixon line and those south of it, primarily centered on the "peculiar institution" of slavery and the ability of states to overrule the decisions of the national government. During the 1840s and 1850s, conflicts between the two sides became progressively more violent. After the election of Abraham Lincoln in 1860 (who southerners thought would work to end slavery) states in the South seceded from the United States, beginning with South Carolina in late 1860. On April 12, 1861, forces of the South (known as the Confederate States of America or simply the Confederacy) opened fire on Fort Sumter, whose garrison was loyal to the Union.
Document 5: Geographic center of the United States: Its position as located in a 1918 survey is located at 39 ° 50 ′ N 98 ° 35 ′ W ﻿ / ﻿ 39.833 ° N 98.583 ° W ﻿ / 39.833; - 98.583 ﻿ (Geographic Center of the Contiguous United States), about 2.6 miles (4.2 km) northwest of the center of Lebanon, Kansas, approximately 12 miles (19 km) south of the Kansas - Nebraska border.
Document 6: Kansas–Nebraska Act: The Kansas -- Nebraska Act divided the nation and pointed it toward civil war. The Act itself virtually nullified the Missouri Compromise of 1820. The turmoil over the act split both the Democratic and Whig parties and gave rise to the Republican Party, which split the United States into two major political camps, the Republican North and the Democratic South.
Document 7: Kansas Legislature: During Kansas' first elections for a territorial government on March 30, 1855, nearly 5,000 Missouri men, led by United States Senator David Rice Atchison and other prominent pro-slavery Missourians, entered the territory, took over the polling places, and elected pro-slavery candidates. The elections resulted in 13 pro-slavery members of the upper house of the territorial legislature and one free - state member, who resigned. The lower house ended up with 25 pro-slavery members and one free - state member. Free - Staters immediately cried foul, naming the new Kansas Territorial Legislature the Bogus Legislature. After meeting for one week in Pawnee at the direction of Territorial Governor Andrew Reeder, the thirty - eight pro-slavery legislators reconvened at the Shawnee Manual Labor School between July 16 and August 30, 1855, and began crafting over a thousand pages of laws aimed at making Kansas a slave state.
Document 8: Circle of latitude: 40 ° N In the USA, the border between Nebraska and Kansas. The parallel was originally chosen for the Mason -- Dixon line, but the line was moved several miles south to avoid bisecting the city of Philadelphia.
Document 9: Bleeding Kansas: Through the Missouri Compromise of 1820, Congress kept a tenuous balance of political power between North and South. In May 1854, the Kansas -- Nebraska Act, created from unorganized Indian lands and territories of Kansas and Nebraska, permitted residency by U.S. citizens, who were to determine their state's slavery status and seek admission to the Union. Immigrants supporting both sides of the question arrived in Kansas to establish residency and gain the right to vote. However, Kansas Territory officials were appointed (1854) by the pro-slavery administration of President Franklin Pierce (in office 1853 -- 1857), and thousands of non-resident pro-slavery Missourians entered Kansas with the goal of winning elections. They captured territorial elections, sometimes by fraud and intimidation. In response, Northern abolitionist elements flooded Kansas with ``free - soilers. ''Anti-slavery Kansas residents wrote the first Kansas Constitution (1855) and elected the Free State legislature in Topeka; this stood in opposition to the pro-slavery government in Lecompton. The two Territorial governments increased as well as symbolized the strife of Bleeding Kansas.
Document 10: Geographic center of the United States: Its position as located in a 1918 survey is located at 39 ° 50 ′ N 98 ° 35 ′ W ﻿ / ﻿ 39.833 ° N 98.583 ° W ﻿ / 39.833; - 98.583 ﻿ (Geographic Center of the Contiguous United States), in Kansas about 2.6 miles (4.2 km) northwest of the center of Lebanon, approximately 12 miles (19 km) south of the Kansas - Nebraska border.
Document 11: Southern California: "Southern California" is not a formal geographic designation, and definitions of what constitutes southern California vary. Geographically, California's north-south midway point lies at exactly 37° 9' 58.23" latitude, around 11 miles (18 km) south of San Jose; however, this does not coincide with popular use of the term. When the state is divided into two areas (northern and southern California), the term "southern California" usually refers to the ten southern-most counties of the state. This definition coincides neatly with the county lines at 35° 47′ 28″ north latitude, which form the northern borders of San Luis Obispo, Kern, and San Bernardino counties. Another definition for southern California uses Point Conception and the Tehachapi Mountains as the northern boundary.
Document 12: Geography of Missouri: Missouri river from its mouth at St. Louis to Columbia. This also corresponds to the southernmost extent of glaciation during the Pre-Illinoian Stage which destroyed the remnant plateau to the north but left the ancient landforms to the south unaltered. The Ozark boundary runs southwestward from there towards Joplin at the southeast corner of Kansas. The boundary between the Ozark and lowland regions runs southwest from Cape Girardeau on the Mississippi River to the Arkansas border just southwest of Poplar Bluff. Missouri borders eight other US States, more than any other state except Tennessee, which also borders eight states.
Document 13: Geography of the United States: The five Great Lakes are located in the north-central portion of the country, four of them forming part of the border with Canada, only Lake Michigan situated entirely within United States. The southeast United States contain subtropical forests and, near the gulf coast, mangrove wetlands, especially in Florida. West of the Appalachians lies the Mississippi River basin and two large eastern tributaries, the Ohio River and the Tennessee River. The Ohio and Tennessee Valleys and the Midwest consist largely of rolling hills and productive farmland, stretching south to the Gulf Coast.
Document 14: Bleeding Kansas: Bleeding Kansas, Bloody Kansas or the Border War was a series of violent political confrontations in the United States between 1854 and 1861 involving anti-slavery ``Free - Staters ''and pro-slavery`` Border Ruffian'', or ``southern ''elements in Kansas. At the heart of the conflict was the question of whether Kansas would allow or outlaw slavery, and thus enter the Union as a slave state or a free state. The Kansas -- Nebraska Act of 1854 called for`` popular sovereignty'' -- that is, the decision about slavery was to be made by the settlers (rather than outsiders). It would be decided by votes -- or more exactly which side had more votes counted by officials. Pro-slavery forces said every settler had the right to bring his own property, including slaves, into the territory. Anti-slavery ``free soil ''forces said the rich slaveholders would buy up all the good farmland and work it with black slaves, leaving little or no opportunity for non-slaveholders. As such, Bleeding Kansas was a conflict between anti-slavery forces in the North and pro-slavery forces from the South over the issue of slavery in the United States, and its violence indicated that compromise was unlikely, and thus it presaged the Civil War.
Document 15: Midwestern United States: The Midwestern United States, also referred to as the American Midwest, Middle West, or simply the Midwest, is one of four geographic regions defined by the United States Census Bureau. It occupies the northern central part of the United States of America. It was officially named the North Central region by the Census Bureau until 1984. It is located between the Northeastern U.S. and the Western U.S., with Canada to its north and the Southern U.S. to its south.
ground_truth: anti-slavery ``Free - Staters ''and pro-slavery`` Border Ruffian'', or ``southern ''elements
sub_queries: what state contains the geographic center of north america Answer: Kansas
who was the conflict between in the strife of bleeding Kansas Answer: anti-slavery ``Free - Staters ''and pro-slavery`` Border Ruffian'', or ``southern ''elements