WHAT HAPPENED IN 1539.
Look what happened the 1539.

Treaty of Toledo signed by King Francis I of France and Holy Roman Emperor Charles V. (12. January 1539)

Spain annexes Cuba. (14. January 1539)

Charles V and Protestants signs Treaty of Frankfurt. (19. April 1539)

Re-founding of the city of Bogotá, New Granada (now Colombia), by Nikolaus Federmann and Sebastián de Belalcázar. (27. April 1539)

In Florida, Hernando de Soto lands at Tampa Bay with 600 soldiers with the goal of finding gold. (30. May 1539)

Hernando de Soto claims Florida for Spain. (3. June 1539)

Council of Trent: Paul III sends out letters to his bishops, delaying the Council due to war and the difficulty bishops had traveling to Venice. (10. June 1539)

Spanish conquistador Hernando de Soto and his army enter the Apalachee capital of Anhaica (present-day Tallahassee, Florida) by force. (6. October 1539)