Question: Who was the first president inaugurated in long pants?
Answer: John Quincy Adams, the sixth president, in 1825. The five presidents before him were inaugurated wearing knee breeches, in the 18th-century style. But by 1825, Adams found it acceptable to be sworn in wearing a homespun black suit with full-length trousers. He also refused to wear the old-fashioned powdered wig. It was a new day in America!