1. Florida was officially named a US territory on December 25, 1821. This was the result of the Adams-Onis Treaty, which was signed by the United States and Spain on February 22, 1819. The treaty ceded Florida to the US, and the territory officially became part of the country on December 25, 1821.

2. On December 25, 1837, the Second Seminole War was raging in Florida. The conflict began in 1835, when the US government tried to force the Native American Seminole people to move to a reservation west of the Mississippi River. The war lasted for seven years and was one of the longest and deadliest in US history.

3. In 1845, Florida became the 27th state of the United States on December 25. It was the third state to be admitted to the Union in that year, following Texas and Iowa.

4. December 25, 1899, saw the arrival of the first train in Key West, marking the completion of the Overseas Railroad. The railroad connected Key West with mainland Florida and was considered an engineering marvel at the time. It was also a key factor in the development of the Florida Keys as a popular tourist destination.

5. On December 25, 1984, the Tampa Bay Buccaneers defeated the Green Bay Packers in a thrilling overtime game. The victory secured the Buccaneers' first playoff appearance in franchise history, and remains one of the most memorable moments in Tampa Bay sports history.