What coverd much of North America before the arrival of non- Native Americans?

Before the arrival of non-Native Americans, much of North America was covered by diverse ecosystems, including vast forests, grasslands, and wetlands. The continent was rich in wildlife and supported numerous Indigenous tribes who lived in harmony with the land, utilizing its resources sustainably. These environments varied significantly from the temperate forests of the East to the deserts of the Southwest and the tundra of the Arctic regions. Overall, North America boasted a rich tapestry of natural landscapes and biodiversity prior to European colonization.