It's said that the Vikings were the first to come to North America but there is also some evidence that the ancient Chinese came here first. But I think it was Norsemen explorers who came first.
The Vikings are said to be the ones who discovered America but when they went to spread the word in England most people didn't care because 79% of the population were slaves with no money, no freedom or interest in the New World. The rich (kings) just didn't really have any interest.