How did humans first migrated to America by boat?

Humans first migrated to the Americas by boat during the last Ice Age, around 15,000 to 20,000 years ago. They likely traveled along the Pacific coastline from Asia, using primitive watercraft such as canoes or rafts. This maritime migration complemented overland routes, allowing them to exploit coastal resources and gradually populate various regions of the Americas. Archaeological evidence supports this theory, indicating that these early travelers reached various parts of the continent by navigating along the shores.