1630 - Quadequine introduced popcorn to English colonists at their first Thanksgiving dinner.
1819 - Spain ceded Florida to the United States.
1865 - In the U.S., Tennessee adopted a new constitution that abolished slavery.
1997 - Scottish scientist Ian Wilmut and colleagues announced that an adult sheep had been successfully cloned. Dolly, the first cloned sheep to be born was born in July 1996.