Explain how scientists believe the first americans arrived on the north american continent

It is believed that they crossed the land bridge that used to lay between Alaska and Asia but that melted many thousands of years ago.

Contributing factors  leading  to the harlem renaissance were the great migration of african americans to northern cities, which concentratedambitious  people in places where they could encourage each  other, and the first world war, which had created new industrial work opportunities for tens of thousands of people.

Hey mate here is the answerthe correct answer is ( gold) may it will you