Your gratuitous mention of supposed Jewish East Coast Families that controlled the shipping business puts you in the same league as Jeremiah Wright, and Lerone Bennett. Your anti-Semitism is showing.
Actually, you're wrong. 1. Not gratuitous but germane. 2. I did NOT say that Jewish families "controlled the shipping business" -- that's your words not mine. I wouldn't believe such a thing. 3. Bennett footnoted his claims with references to historical researches, many with Jewish authors, and his work has been combed over and found to be at least partially, if not substantially, true.
I don't know how accurate his claim is, that references to "Portuguese" slave-traders was in fact a polite reference to Sephardic Jews. Someone will have to look into that one; I don't trust Bennett's judgment based on what he presented.
Someone will know the answer to that one, I don't.