Final answer:
Archaeologists, anthropologists, genetic scientists, and historians are experts who continue to put together evidence about the first Americans. They use scientific research, genetic sequencing, and archaeological finds to understand the origins and migrations of early humans in the Americas.
Step-by-step explanation:
Archaeologists, anthropologists, genetic scientists, historians, and sociologists are some of the experts who continue to put together pieces of evidence to tell the story of the first Americans that came here thousands of years ago. They use scientific research, genetic sequencing, and archaeological finds to understand the origins and migrations of early humans in the Americas. The Bering Land Bridge migration model and the coastal migration theory are two important theories that support human migration from Asia to the Americas.