Sept. 21 (UPI) -- On this date in history: In 1780, American Gen. Benedict Arnold gave plans to the British for the surrender of West Point, New York. Arnold's name was forever after associated with the word "traitor." Advertisement In 1792, the Legislative Assembly of revolutionary France voted to abolish the monarchy and establish the First Republic, stripping King Louis XVI of most of his power. In 1893, the first successful American-made, gasoline-operated motorcar appeared on the streets