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Top of the IA Hierarchies

			............ Named Events
			................ <North and South American history>
			.................... <United States history>
			........................ American Civil War (American history, 1861-1865)
			............................ Battle of Antietam (American Civil War battle, 1862)
			............................ Battle of Chancellorsville (American Civil War battle, 1863)
			............................ Battle of Fort Sumter (American Civil War battle, 1861)
			............................ Battle of Fredericksburg (American Civil War battle, 1862)
			............................ Battle of Gettysburg (American Civil War,1863)
			............................ Battle of Shiloh (American Civil War battle, 1862)
			............................ Battle of Spotsylvania Court House (American Civil War battle, 1864)
			............................ Battle of the Monitor and Merrimack (American Civil War, 1862)
			............................ Battle of the Wilderness (American Civil War, 1864)
			............................ Battle of Vicksburg (American Civil War, 1863)
			............................ First Battle of Bull Run (American Civil War, 1861)
			............................ Second Battle of Bull Run (American Civil War, 1862)
			............................ Seven Days Battle (American Civil War battle, 1862)