It depends. Native Americans walked on North America, a long time before the Vikings were supposed to have landed, or a very long time before Europeans arrived.
Wheat is the first cereal to be cultivated by man.
The first man besides the Vikings to land on the North American continent was Christopher Columbus. He landed in north America in 1492.
John Cabot of England
No
Alexander Mackenzie
There is evidence that the Chinese came to North America before the Vikings. In the early history of man paleo-Indians following the herds entered North America and settled.
It is thought man first populated North America some time during the last Ice Age, probably 10,000 to 18,000 years ago.
By boat
There are billions of people who did not start a settlement in North America.
Because Columbus landing started the colonization of the Americas.
If you mean the U.S as in North America then....A Native American Indian namd Ochowatstaki Lureyitthim
Man first walked on the moon in 1969.