Prehistoric North America refers to the time before written records, spanning thousands of years. During this period, various groups of people, known as Native Americans, inhabited the continent. They developed diverse cultures, languages, and lifestyles, adapting to different environments, from the Arctic tundra to the deserts of the Southwest. The landscape was rich with wildlife, including large mammals like the woolly mammoth and saber-toothed cat. Early inhabitants relied on hunting, gathering, and later, agriculture. Archaeological sites, such as Cahokia and Mesa Verde, provide insights into their complex societies and innovations, showcasing their connection to the land.