My guess would be that reggae came from Calypso music, it would be hard to not hear the similarities. Calypso came from Africa, so the origins would point to that continent, not America. I could be mistaken, but it's only a guess.
Bob Marley has inspired many artists, but his music has lasted the test of time. Definitely an unforgettable artist, musician, and song writer.
You are correct sir. Reggae is an off shoot from Calypso which originally came from Trinidad. Harry Belafonte made it popular in the U.S. The Banana boat song was the first single to sell more than a million copies.