The U.S. Civil War was the bloodiest war in American history. From 1861 to 1865, at least 620,000 soldiers died in the fighting. The war was fought between the states of the North - the Union, and the South - the Confederacy, which were divided over states’ rights, including slavery. Now 150 years later, the soldiers who died are being memorialized through a tree planting project that will span four eastern states where many of the battles took place. VOA’s Deborah Block has the story.