I heard some ADOS went to Panama to work on the Canal also. I also heard that after the Civil War, a few went to Trinidad to work too.
When the U.S. took over the Canal project, they blocked African American workers from going down there.
I'm certain that some went when other countries were in charge. Some may have been able to find a way around the restrictions and earn money down there after America took the reigns, but not sure.
You're right about after the Civil War. Didn't know about Trini in particular, but there are communities of AA descended people throughout the Caribbean, Central, and South America.
People who waged cyber wars on other Black people based on heritage really don't understand how much migration has taken place the past 200+ years, and especially since slavery was abolished.