American Flag circa 1821, 23 stars

American Territorial Period (1821-1845)

Florida’s northern border no longer international.

How the American Territorial Period Started

After several tumultuous years, relations between the U.S. and Spain had weakened. In 1821, Florida peacefully became a United States territory through the Adams-Onís Treaty.

The Spanish subjects who stayed in St. Augustine became American citizens, while others emigrated to Cuba. Similarly, African-descended people had to make the choice of emigrating to one of Spain’s other colonies or staying in Florida.

Black People During Florida’s American Territorial Period

Adam-Onís Treaty marked a major regression in the civil rights of African-descended people in Florida. Most who chose to stay in Florida assimilated with the Seminole tribes (or Cimmarones to the Spanish).

A population of Black Seminoles had been growing for more than a decade, living alongside Indigenous people (primarily displaced Creeks) in a semi-separate society.

Resources

Online Resources

The American Period (1821-Present) Summary, from the NPS & Castillo de San Marcos National Monument

“St. Augustine’s Spanish residents not ready to make change to US in 1821,” 2021 article from The St. Augustine Record

Sources on the Lives of Enslaved People in Northeast Florida, reference list from NPS & Timucuan Ecological & Historic Preserve

The Civil Rights Movement in Florida, Learning Unit from Florida Memory

Learning Resources from Resilience: Black Heritage in St. Augustine

Guide to Black History Collections in the Archives of Florida, from Florida Memory

Florida History Online, database from the University of North Florida

Further Reading

Graham, Thomas. 1978. The Awakening of St. Augustine: The Anderson Family and the Oldest City. St. Augustine Historical Society.

Black History of Florida: A Reading List, from The Florida Bookshelf

American Territorial Period (1821-1845)

Short Description Lasting for about 24 years, the American Territorial Period was a time of transition for St. Augustine. Conflict between American forces and a growing population of Black and Indigenous Seminoles marked this era with conflict and change.

Much like the British before them, the Americans utilized a system of chattel slavery that counted enslaved Africans as property instead of people. Enslaved Black people made up around half of Florida's population, which totalled at 54,477 by 1840.

A major goal of Florida’s Territorial Government was to further develop Florida, with plantations, turpentine mills, and salt works being founded throughout.