Where+did+they+come+from?

The First Americans came from somewhere unknown. What I mean by this is that there are many theories on where they came from. One of the many theories is that they traveled in the icy waters by boat and by sea by ship. Another theory is they reached America from Europe, Africa, or islands in the South Pacific. They could have walked across a land bridge from what they call the Bering Strait. As I said before, there are many, many theories but no one really knows how the First Americans got to North and South America.