We Native Americans have been asking that same question forever. We just say that WE DISCOVERED COLUMBUS....and saved his ass. But, when they say that in the history books, I think they are referring to "The Europeans discovered America in 1492"
Indians were already living there so they didn't discover it they were there already there are some hints that suggest viking actually discovered them first but didn't saw anything that interested them and left hope this help!
the viking explorer leif erikson came to north america in the 1000s so he was the first person from europe to discover it, but columbus was the first person who discovered the Caribbeans because the vikings settled in the north