The land bridge and coastal crossing theories concern the earliest human migration from asia to south america. south america to asia. asia to north america. north america to asia.

The correct answer is “Asia to North America”

The Land Bridge Theory is a theory that defends the possibility of a wide plain that connected Asia and North America. This is supported by evidence of human occupation in Chile by 14,500 years ago, because of this scientists think that humans went from Alaska to South America, spreading across the continent.

Now, the last scientific DNA studies show that the population from the Americas did not originate from Asia Mongolians, in fact, they are a separate and distinct race.

the mexican-american war was a conflict between the united states and mexico, fought from april 1846 to february 1848.