It was on this day in 1865 that Gen. Robert E. Lee surrendered to Gen. Ulysses S. Grant in the Virginia town of Appomattox Court House, marking the end of our Second War for Independence. But April 9 holds an even greater significance: it is the 139th anniversary of the death of these United States of America. The signing of the Declaration of Independence on July 4, 1776, saw the birth of a new nation. It was not a single, monolithic entity but a confederation of free and independent states. Although the original 13 colonies had existed in relative unity...