Question: John Brown, was an American abolitionist who believed and advocated that armed insurrection was the only way to overthrow the institution of slavery in which location, during the Kansas campaign, Brown commanded forces at which battle that took place on June 2, 1856, when anti-slavery forces, led by the noted abolitionist John Brown, attacked the encampment of Henry C. Pate near Baldwin City, Kansas?
Context: John Brown (May 9, 1800 – December 2, 1859) was an American abolitionist who believed and advocated that armed insurrection was the only way to overthrow the institution of slavery in the United States.  Brown first gained attention when he led small groups of volunteers during the Bleeding Kansas crisis of 1856.  Dissatisfied with the pacifism of the organized abolitionist movement, he said, "These men are all talk.  What we need is action—action!"  During the Kansas campaign, Brown commanded forces at the Battle of Black Jack and the Battle of Osawatomie.  He and his supporters killed five supporters of slavery in the Pottawatomie massacre of May 1856 in response to the sacking of Lawrence by pro-slavery forces. John Brown is a biography written by W. E. B. Du Bois about the abolitionist John Brown.  Published in 1909, it tells the story of John Brown, from his Christian rural upbringing, to his failed business ventures and finally his "blood feud" with the institution of slavery as a whole.  Its moral symbolizes the significance and impact of a white abolitionist at the time, a sign of threat for white slave owners and those who believed that only blacks were behind the idea of freeing slaves. The John Brown Museum, also known as the John Brown State Historic Site and John Brown Cabin, is located in Osawatomie, Kansas.  The site is operated by the Kansas Historical Society, and includes the log cabin of Reverend Samuel Adair and his wife, Florella, who was the half-sister of the abolitionist John Brown.  Brown lived in the cabin during the twenty months he spent in Kansas and conducted many of his abolitionist activities from there.  The museum's displays tell the story of John Brown, the Adairs and local abolitionists, and include the original cabin, Adair family furnishings and belongings, and Civil War artifacts. The Battle of Black Jack took place on June 2, 1856, when anti-slavery forces, led by the noted abolitionist John Brown, attacked the encampment of Henry C. Pate near Baldwin City, Kansas.  The battle is cited as one incident of "Bleeding Kansas" and a contributing factor leading up to the American Civil War of 1861 to 1865. "John Brown's Body" (originally known as "John Brown's Song") is a United States marching song about the abolitionist John Brown.  The song was popular in the Union during the American Civil War.  The tune arose out of the folk hymn tradition of the American camp meeting movement of the late 18th and early 19th century.  According to an 1890 account, the original John Brown lyrics were a collective effort by a group of Union soldiers who were referring both to the famous John Brown and also, humorously, to a Sergeant John Brown of their own battalion.  Various other authors have published additional verses and/or claimed credit for originating the John Brown lyrics and tune. John Brown Jr., the eldest son of the abolitionist John Brown, was born in Ohio in July 1821.  Along with four brothers, John Jr. moved out west to Kansas in 1854.  After his father’s actions in “Bloody Kansas”, John Jr. was arrested, mistreated while in prison, and later released.  Shortly after this, John Jr. left Kansas with his father.  John Jr. might have been aware of the plans for the raid at Harpers Ferry in Virginia.  He was not a part of the raid itself, yet he knew all the details and even was part of the process. Virginia v. John Brown was a criminal trial held in Virginia in October 1859 to prosecute anti-slavery abolitionist John Brown for his involvement in a raid on the United States federal armory at Harpers Ferry, Virginia (now part of West Virginia) on October 16–18, 1859.  This event resulted in the death of 14 people and the wounding of nine others. John Brown's raid on Harper's Ferry (also known as John Brown's raid or The raid on Harper's Ferry) was an effort by armed abolitionist John Brown to initiate an armed slave revolt in 1859 by taking over a United States arsenal at Harpers Ferry, Virginia.  Brown's party of 22 was defeated by a company of U.S. Marines, led by First Lieutenant Israel Greene.  Colonel Robert E. Lee was in overall command of the operation to retake the arsenal.  John Brown had originally asked Harriet Tubman and Frederick Douglass, both of whom he had met in his transformative years as an abolitionist in Springfield, Massachusetts, to join him in his raid, but Tubman was prevented by illness, and Douglass declined, as he believed Brown's plan would fail. Harriet Tubman (born Araminta Ross;  1822 March 10, 1913) was an American abolitionist, humanitarian, and an armed scout and spy for the United States Army during the American Civil War.  Born into slavery, Tubman escaped and subsequently made some thirteen missions to rescue approximately seventy enslaved people, family and friends, using the network of antislavery activists and safe houses known as the Underground Railroad.  She later helped abolitionist John Brown recruit men for his raid on Harpers Ferry, and in the post-war era was an active participant in the struggle for women's suffrage. The John Brown Farm State Historic Site includes the home and final resting place of abolitionist John Brown.  It is located on John Brown Road in North Elba near Lake Placid, New York, where John Brown moved in 1849 to lead freed slaves in farming.  In 1855, he moved to Kansas to support his sons' efforts to keep Kansas as a free-state under the popular sovereignty laws, leaving his wife and several of his children behind.  Brown returned to visit his family at Lake Placid several times.  In 1859, Brown attempted to start a liberation movement among enslaved African Americans by seizing the arsenal at Harpers Ferry, Virginia (now West Virginia).  For this, he was tried for treason against the state of Virginia and was hanged.
Answer: United States