Yes, there were many in the 1800´s, but either they were used up in wars (specially in civil wars and the war with neighbor paraguay),
or mixed up with whites.
Many immigrants (italians?) came alone here, and sure as hell they liked black women.
The dominican republic is located in the caribbean, by the way.
And the reason of the influx of asians and russians in the 90´s was that we did not visas to travel to the usa, so many used this country as an stepping stone to get there and then, of course, stay illegally. It was cheaper then going illegally from china, (smuglers would charge 50k per head then).
Henry