The first Americans! For millions of years, North and South America were cut off from the world by deep, stormy waters. No one lived there. Then, during the last Ice Age, the oceans froze and parts of the sea bed were uncovered. A "land-bridge" of dry sea bed linked America and northeast Asia. Many wild animals lives on the land-bridge, so groups of hunters roamed across it in search of food. Eventually, they reached America and settled there. Historians are not sure exactly when this happened, but it was probably about 18,000 years ago.
They walked
they came by boat or something
Cavalcade of America - 1952 The Boy Who Walked to America 4-12 was released on: USA: 3 January 1956
walked
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.
Peter Jenkins walked across America to discover the land for himself.
10000000000 of years ago the land on earth was connetted and it took 100 of years but they walked and walked there way here
Walked across a land bridge.
Donald Cole in 2013
They either walked or they sailed around south America
If you mean Native Americans, they walked across the land bridge.
no they walked across a land bridge from Asia that is now under water