After the Battle of Antietam.
Answer: Calvinism became an important form of Protestantism because of new ideas and theories about salvation.
Explanation:
George Washington was a good president because he fought in a war along with his army few of the many who had his bravery to fight in the war while he was the president even though he had slaves but he was also a great inventor George Washington is the only US president to have never occupied the White House.