And he also provided new info.............of course that helped the Europeans come and kill the Indians and negroid African kingdoms that i believe were here.......

Nautical considerations

Though Columbus was wrong about the number of degrees of longitude that separated Europe from the Far East and about the distance that each degree represented, he did possess valuable knowledge about the trade winds, which would prove to be the key to his successful navigation of the Atlantic Ocean. During his first voyage in 1492, the brisk trade winds from the east, commonly called "easterlies", propelled Columbus' fleet for five weeks, from the Canary Islands to The Bahamas. The precise first land sighting and landing point was San Salvador Island.^[32] To return to Spain against this prevailing wind would have required several months of an arduous sailing technique, called beating, during which food and drinkable water would probably have been exhausted.

Instead, Columbus returned home by following the curving trade winds northeastward to the middle latitudes of the North Atlantic, where he was able to catch the "westerlies" that blow eastward to the coast of Western Europe. There, in turn, the winds curve southward towards the Iberian Peninsula.^[33][34]

It is unclear whether Columbus learned about the winds from his own sailing experience or if he had heard about them from others. The corresponding technique for efficient travel in the Atlantic appears to have been discovered first by the Portuguese, who referred to it as the Volta do mar ("turn of the sea"). Columbus' knowledge of the Atlantic wind patterns was, however, imperfect at the time of his first voyage. By sailing directly due west from the Canary Islands during hurricane season, skirting the so-called horse latitudesof the mid-Atlantic, Columbus risked either being becalmed or running into a tropical cyclone, both of which he luckily avoided.^[31]