1. describe the geological and geographical conditions that set the stage of North American history. 

        The Great Ice Age created a land bridge that connected Eurasia with North America allowing nomads to come over. The bridge is said occurred an estimated 35,000 years ago. Being used as a tool or source to cut acrose, Eurasia and North america, making it easier for the people to also spread to Central, North, and South America. But when the ice started melting, sea level began to rose causin the sealing of the bridge. When the bridge was sealed making it impossable for it to be us to go acrose or to even come back, populating the continent to what is known as The Americas.