To kill mice and rats which ate the sailors' food and potentially carried disease.
The Last Voyage of Columbus has 304 pages.
In 1492 there were no "Plains nations" since there were no horses in North America.
Columbus showed the Europeans the way to the Americas
Columbus never made land in North America, so he didn't take any ships to " New York". NY also did not exist in the 1400's. Nothing was there until the Dutch founded a colony 200 years later. So, he,took ZERO ships to NY.
for many years
4 ships
33 days on his voyage
4
6 ships
Columbus first came to America in 1492.
He only went on three.
Enough for Christopher Columbus to make it to America.