By the early 1800s, Indian removal was a significant issue throughout the southeastern U.S. and also in Florida. In 1830, the U.S. Congress passed the Indian Removal Act and as settlement increased, pressure grew on the U.S. government to remove the Indians from Florida. Seminoles harbored runaway blacks, known as the Black Seminoles, and clashes between whites and Indians grew with the influx of new settlers. In 1832, the Treaty of Payne’s Landing promised to the Seminoles lands west of the Mississippi River if they agreed to leave Florida. Many Seminole left at this time.
Some Seminoles remained, and the U.S. Army arrived in Florida, leading to the Second Seminole War (1835–1842). Following the war, approximately 3,000 Seminole and 800 Black Seminole were removed to Indian Territory. A few hundred Seminole remained in Florida in the Everglades.
On March 3, 1845, Florida became the 27th state to join the United States of America. The state was admitted as a slave state and ceased to be a sanctuary for runaway slaves. Initially its population grew slowly.
As European settlers continued to encroach on Seminole lands the United States intervened to move the remaining Seminoles to the West. The Third Seminole War (1855–58) resulted in the forced removal of most of the remaining Seminoles, although hundreds of Seminole Indians remained in the Everglades.
Slavery, War, and Disenfranchisement:
American settlers began to establish cotton plantations in north Florida, which required numerous laborers, which they supplied by buying slaves in the domestic market.
On January 10, 1861, nearly all delegates in the Florida Legislature approved an ordinance of secession, declaring Florida to be “a sovereign and independent nation”—an apparent reassertion to the preamble in Florida’s Constitution of 1838, in which Florida agreed with Congress to be a “Free and Independent State.” Although not directly related to the issue of slavery, the ordinance declared Florida’s secession from the Union, allowing it to become one of the founding members of the Confederate States, a looser union of states.
The confederal union received little help from Florida; the 15,000 men it offered were generally sent elsewhere. The largest engagements in the state were the Battle of Olustee, on February 20, 1864, and the Battle of Natural Bridge, on March 6, 1865. Both were Confederate victories.
After the Reconstruction period ended in 1876, white Democrats regained power in the state legislature. In 1885, they created a new constitution, followed by statutes through 1889 that disfranchised most blacks and many poor whites.
Until the mid-20th century, Florida was the least populous state in the southern United States. In 1900, its population was only 528,542.
20th and 21st century Growth:
Historically, Florida’s economy has been based primarily upon agricultural products such as cattle, sugar cane, citrus fruits, tomatoes, and strawberries.
Economic prosperity in the 1920s stimulated tourism to Florida and related development of hotels and resort communities. Combined with its sudden elevation in profile was the Florida land boom of the 1920s, which brought a brief period of intense land development. Devastating hurricanes in 1926 and 1928, followed by the Great Depression, brought that period to a halt. Florida’s economy did not fully recover until the military buildup for World War II.