Answer:The Earliest Humans:1. Emerged around 6-8 million years ago in Africa.2. Early human ancestors include Australopithecus, Homo habilis, and Homo erectus.3. Developed bipedalism (walking on two legs) around 4-6 million years ago.The Stone Age:1. Spanned from approximately 2.5 million years ago to 10,000 BCE.2. Divided into three periods: - Paleolithic (Old Stone Age): 2.5 million - 10,000 BCE (characterized by hunter-gatherer societies). - Mesolithic (Middle Stone Age): 10,000 - 5,000 BCE (saw the development of more sophisticated tools). - Neolithic (New Stone Age): 5,000 - 2,000 BCE (marked the beginning of agriculture and settled societies).Key Characteristics:1. Tool development: Stone tools, fire control, and language.2. Shelter: Caves, tents, and primitive dwellings.3. Food: Hunting, gathering, and later, agriculture.4. Social structure: Small, nomadic groups, later developing into tribes and settlements.Important Discoveries:1. Discovery of fire (around 1.5 million years ago).2. Development of language (around 500,000 years ago).3. Creation of art and symbolic expression (e.g., cave paintings).[tex].[/tex]