sentences:  Lincoln authorized the Union army to target the Confederate infrastructure—such as plantations, railroads, and bridges—hoping to shatter the South's morale and weaken its economic ability to continue fighting.Leaving Atlanta, and his base of supplies, Sherman's army marched east with an unknown destination, laying waste to about 20 percent of the farms in Georgia in his "March to the Sea".He reached the Atlantic Ocean at Savannah, Georgia in December 1864.