Simple question. What is/are your favorite colonial ventures from otl that didn't succeed in the long run? Bonus points if you can convince someone to do a timeline about them being successful.
My favorite is France Antarctique in Rio de Janeiro, which existed between 1555 and 1567, and had control over the coast from Rio de Janeiro to Cabo Frio, and became a haven for Huguenots very quickly.
Also Equinoctial France founded in the Northern coast of what is today the Brazilian state of Maranhão, founding the city of Saint-Louis, later renamed São Luis by the Portuguese. It didn't last long being fouded in 1612 and taken in 1615.