Today in History: November 15: On Nov. 15, 1777, the Second Continental Congress approved the Articles of Confederation. In 1806, explorer Zebulon Pike sighted the mountaintop now known as Pikes Peak in present-day Colorado. In 1864, late in the U.S. Civil War, Union forces led by Major General William Tecumseh Sherman began their “March to the Sea.” In 1988 The Palestinian Declaration of Independence formally established the State of Palestine.