Why was William Tecumseh Sherman called the “first modern general?”

Some military historians consider Sherman as the most outstanding Union Army commander in the American Civl War. He has been described as the first modern general because of his "total war" tactics in his march through Georgia in 1864.

Explanation:

powers  are  denied  to the  national governmentin three distinct ways: some  powers, such as the  power  to levy duties on exports or prohibit the freedom of religion, speech, press, or assembly, are expressly  denied  to the  national government  in the  constitution.