1. In 1837, the US Army established Fort Moultrie in Key West. The fort served as a military post during the Second Seminole War and later became a part of the Key West National Wildlife Refuge.

2. On February 12, 1901, the first passenger train arrived in Miami, marking a significant milestone in the city's growth and development. The arrival of the train helped to solidify Miami's position as a major transportation hub for the state of Florida.

3. In 1947, the Florida State Legislature established the Florida Development Commission, marking the beginning of a major effort to attract businesses and industries to the state. The Commission played a crucial role in Florida's post-war economic boom, helping to create jobs and spur growth across the state.

4. On February 12, 1958, the United States Air Force launched a Thor-Able rocket from Cape Canaveral, marking the first successful launch from the newly established spaceport. This launch was an important milestone in the US space program and helped to establish Cape Canaveral as a major launch site for NASA and other space agencies.

5. In 2000, the Florida Supreme Court ordered a manual recount of presidential election ballots in the state, leading to a contentious legal battle that ultimately resulted in the US Supreme Court's decision to halt the recount and award the presidency to George W. Bush. The so-called "Florida recount" has had a significant impact on US politics and remains a controversial topic to this day.