This is all a matter of record: 15th/16th century is not pre-history, and the Spaniards recorded all of this. Bartholome de las Casas was a monk who wrote it in detail.
In just two years under Columbus Governorship through murder, mutilation, being worked to death or suicide more than half the 250,000 Indians in Haiiti were dead
- Howard Zinn
"Haiti under the Spanish is one of the primary instances of genocide in Human history"
"Columbus not only sent the first slaves acroiss the Atlantic, he sent more slaves than any other individual"
- James Loewen
Bartlome de Las Casas says:
There were 60,000 people living on this island [in 1508], including both Spaniards & Indians. So that between 1494 and 1508 more than three million people died from war, slavery and the mines.
Who in future generations will believe this?
I myself as an eyewitness can scarce believe it
Even if his figures were exaggerations (were there 3 million as he says, or only a million as some historians calculate, or as many as 8 million as some others now believe) it is undeniably true that Columbus over those 6 years was responsible for the slaughter of hundreds of thousands of people.
It is a quite remarkable fact that this is so little known.