Final answer:
Early Homo sapiens had small jaws and teeth, walked with a human gait, had humanlike feet, and had a brain size similar to modern humans. These characteristics allowed them to create tools, master fire, and adapt to different environments.
Step-by-step explanation:
Early Homo sapiens had several characteristics that set them apart from earlier hominids. They had small jaws and teeth, with the third molar larger than other molars. Their skulls were shaped more like Homo erectus or Homo habilis, with a sagittal keel - a small raised ridge on top of the skull. They also walked with a human gait, had humanlike feet with arches and ankles, and had a brain size similar to modern humans. These characteristics contributed to their ability to create and use tools, master the use of fire, and thrive in diverse environments.