Answer:
True The Treaty of Guadalupe Hidalgo set the southern border of the U.S. as it is today.
First Settlers arrived in the Americas from Asia through the Bering Strait. At the time the climate was much colder than today, and it is suggested that either the straight was frozen over and people could walk or the sea was a lot more shallow then today, so people could cross the Strait with primitive boats.
There is no define you just have to think