Homo sapiens originated in Africa, likely Ethiopia or Zambia, around 200,000 years ago. They migrated throughout the world and were the first humans. Homo sapiens spent their time gathering plants, hunting animals, and cooking food. They lived in tribes and exchanged goods. Homo sapiens had changing environments and built shelters from branches, leaves, and tree bark. They developed tools from stone, bone, and antlers to hunt, gather food, and craft items.