The victory at Saratoga marked an important turning point in the Revolutionary War.
Explanation:
The victory by the Americans at Saratoga marked a turning point in the war, as it showed Britain that the Americans were a formidable enemy. British general John Burgoyne, leader of the invasion in New England, was forced to surrender with his men outnumbered 3 to 1 and surrounded by the American troops. The date of his surrender, October 18, 1777, was so important that it was declared a national holiday by Congress.
So if the vice president (president of the Senate) isn’t present, the president pro tempore (senator who’s been there the longest from the majority party) will take over.