Question: What was the importance of the battle named after the capital of the state that the Hindenburg was over when it caught fire?

full_context: Document 1: The Death of General Mercer at the Battle of Princeton, January 3, 1777: The Death of General Mercer at the Battle of Princeton, January 3, 1777 is the title of an oil painting by the American artist John Trumbull depicting the death of the American General Hugh Mercer at the Battle of Princeton on January 3, 1777 during the American Revolutionary War. The painting was Trumbull’s first depiction of an American victory. It is one of a series of historical paintings on the war, which also includes the "Declaration of Independence" and "The Capture of the Hessians at Trenton, December 26, 1776".
Document 2: 2nd Legislative District (New Jersey): New Jersey's 2nd Legislative District is one of 40 in the state, covering the Atlantic County municipalities of Absecon City, Atlantic City, Brigantine City, Buena Borough, Buena Vista Township Egg Harbor City, Egg Harbor Township, Folsom Borough, Hamilton Township, Linwood City, Longport Borough, Margate City, Mullica Township, Northfield City, Pleasantville City, Somers Point City and Ventnor City as of the 2011 apportionment. Except for an eight-year period from 1974 until 1982, the 2nd District is exclusively made up of municipalities from Atlantic County since 1967.
Document 3: Battle of Trenton: The Battle of Trenton was a small but pivotal battle during the American Revolutionary War which took place on the morning of December 26, 1776, in Trenton, New Jersey. After General George Washington's crossing of the Delaware River north of Trenton the previous night, Washington led the main body of the Continental Army against Hessian mercenaries garrisoned at Trenton. After a brief battle, almost two - thirds of the Hessian force was captured, with negligible losses to the Americans. The battle significantly boosted the Continental Army's flagging morale, and inspired re-enlistments.
Document 4: Bermuda: After several failed attempts, in 1930 the first aeroplane reached Bermuda. A Stinson Detroiter seaplane flying from New York, it had to land twice in the ocean: once because of darkness and again to refuel. Navigation and weather forecasting improved in 1933 when the Royal Air Force (then responsible for providing equipment and personnel for the Royal Navy's Fleet Air Arm) established a station at the Royal Naval Dockyard to repair (and supply replacement) float planes for the fleet. In 1936 Luft Hansa began to experiment with seaplane flights from Berlin via the Azores with continuation to New York City.
Document 5: Hunterdon Central Regional High School: Hunterdon Central Regional High School is a comprehensive, four-year public high school, and regional school district that serves students from five municipalities in east central Hunterdon County, New Jersey, United States. Students hail from Delaware Township, East Amwell Township, Flemington, Raritan Township and Readington Township.
Document 6: 15th Legislative District (New Jersey): New Jersey's 15th Legislative District is one of 40 in the New Jersey Legislature, covering the Hunterdon County municipalities of East Amwell Township, Lambertville City and West Amwell Township; and the Mercer County municipalities of Ewing Township, Hopewell Borough, Hopewell Township, Lawrence Township, Pennington Borough, Trenton City and West Windsor Township.
Document 7: 8th Legislative District (New Jersey): New Jersey's 8th Legislative District is one of 40 in the New Jersey Legislature, covering the Atlantic County municipality of Hammonton; the Burlington County municipalities of Eastampton Township, Evesham Township, Hainesport Township, Lumberton Township, Mansfield Township, Medford Township, Medford Lakes Borough, Mount Holly Township, Pemberton Borough, Pemberton Township, Shamong Township, Southampton Township, Springfield Township, Westampton Township and Woodland Township; and the Camden County municipalities of Berlin Borough, Pine Hill Borough, Pine Valley Borough and Waterford Township as of the 2011 apportionment.
Document 8: Valley Forge: Increasing military efficiency, morale, and discipline were as vital to the army's well - being as its supply of food and arms. The army had been handicapped in battle because unit training was administered from a variety of field manuals, making coordinated battle movements awkward and difficult. The soldiers were trained, but not uniformly. The task of developing and carrying out an effective training program fell to Baron Friedrich von Steuben, a skilled Prussian drill master who had recently arrived from Europe. He tirelessly drilled the soldiers, improving their battle and formation techniques greatly; more importantly, he gave them their morale back, which had been lost in the hopeless winter.
Document 9: St. John's, Newfoundland and Labrador: St. John's was the starting point for the first non-stop transatlantic aircraft flight, by Alcock and Brown in a modified Vickers Vimy IV bomber, in June 1919, departing from Lester's Field in St. John's and ending in a bog near Clifden, Connemara, Ireland. In July 2005, the flight was duplicated by American aviator and adventurer Steve Fossett in a replica Vickers Vimy aircraft, with St. John's International Airport substituting for Lester's Field (now an urban and residential part of the city).
Document 10: Hydrogen: The first non-stop transatlantic crossing was made by the British airship R34 in 1919. Regular passenger service resumed in the 1920s and the discovery of helium reserves in the United States promised increased safety, but the U.S. government refused to sell the gas for this purpose. Therefore, H2 was used in the Hindenburg airship, which was destroyed in a midair fire over New Jersey on 6 May 1937. The incident was broadcast live on radio and filmed. Ignition of leaking hydrogen is widely assumed to be the cause, but later investigations pointed to the ignition of the aluminized fabric coating by static electricity. But the damage to hydrogen's reputation as a lifting gas was already done.
Document 11: Battle of Trenton: The Battle of Trenton was a small but pivotal battle during the American Revolutionary War which took place on the morning of December 26, 1776, in Trenton, New Jersey. After General George Washington's crossing of the Delaware River north of Trenton the previous night, Washington led the main body of the Continental Army against Hessian soldiers garrisoned at Trenton. After a brief battle, nearly the entire Hessian force was captured, with negligible losses to the Americans. The battle significantly boosted the Continental Army's flagging morale, and inspired re-enlistments.
Document 12: 6th Legislative District (New Jersey): New Jersey's 6th Legislative District is one of 40 in the New Jersey Legislature, covering the Burlington County municipality of Maple Shade Township and the Camden County municipalities of Berlin Township, Cherry Hill Township, Collingswood Borough, Gibbsboro Borough, Haddon Township, Haddonfield Borough, Hi-Nella Borough, Merchantville Borough, Oaklyn Borough, Pennsauken Township, Somerdale Borough, Stratford Borough, Tavistock Borough and Voorhees Township as of the 2011 apportionment.
Document 13: Hydrogen: In the same year the first hydrogen-cooled turbogenerator went into service with gaseous hydrogen as a coolant in the rotor and the stator in 1937 at Dayton, Ohio, by the Dayton Power & Light Co.; because of the thermal conductivity of hydrogen gas, this is the most common type in its field today.
Document 14: Battle of Princeton: The Battle of Princeton was a battle of the American Revolutionary War, fought near Princeton, New Jersey on January 3, 1777. Lieutenant General Charles Cornwallis had left 1,400 British troops under the command of Lieutenant Colonel Charles Mawhood in Princeton. Following a surprise attack at Trenton early in the morning of December 26, 1776, General George Washington of the Continental Army decided to attack the British in New Jersey before entering winter quarters. On December 30, he crossed the Delaware River back into New Jersey. His troops followed on January 3, 1777. Washington advanced to Princeton by a back road, where he pushed back a smaller British force but had to retreat before Cornwallis arrived with reinforcements. The battles of Trenton and Princeton were a boost to the morale of the Continental troops, leading many recruits to join the Continental Army in the spring.
Document 15: Hydrogen: Hydrogen was liquefied for the first time by James Dewar in 1898 by using regenerative cooling and his invention, the vacuum flask. He produced solid hydrogen the next year. Deuterium was discovered in December 1931 by Harold Urey, and tritium was prepared in 1934 by Ernest Rutherford, Mark Oliphant, and Paul Harteck. Heavy water, which consists of deuterium in the place of regular hydrogen, was discovered by Urey's group in 1932. François Isaac de Rivaz built the first de Rivaz engine, an internal combustion engine powered by a mixture of hydrogen and oxygen in 1806. Edward Daniel Clarke invented the hydrogen gas blowpipe in 1819. The Döbereiner's lamp and limelight were invented in 1823.
ground_truth: boosted the Continental Army's flagging morale, and inspired re-enlistments
sub_queries: What city was the ship over when it caught fire? Answer: New Jersey
New Jersey >> capital Answer: Trenton
what was the main importance of the battle of Trenton Answer: boosted the Continental Army's flagging morale, and inspired re-enlistments