USA HISTORY

Detailed explanation-1: -William Henry Harrison was the first Whig to enter office, and the first President to die in office.

Detailed explanation-2: -Millard Fillmore, a member of the Whig party, was the 13th President of the United States (1850-1853) and the last President not to be affiliated with either the Democratic or Republican parties.

Detailed explanation-3: -William Henry Harrison, an American military officer and politician, was the ninth President of the United States (1841), the oldest President to be elected at the time. On his 32nd day, he became the first to die in office, serving the shortest tenure in U.S. Presidential history.