Radiocarbon dating not accurate
Sites containing signs of the first simple but purposeful burials in graves date to as early as 40,000 years ago in Europe and Southwest Asia.
By the time people lived in civilizations, burials and funeral ceremonies had become extremely important and elaborate rituals.
Dozens of archaeological sites throughout Asia and Europe show how people migrated from Africa and settled these two continents during the last Ice Age (100,000 to 15,000 years ago).
Archaeological studies have also provided much information about the people who first arrived in the Americas over 12,000 years ago.
Some sites also contain evidence of the earliest use of simple tools.
Archaeology plays a major role in the study of early civilizations, such as those of the Sumerians of Mesopotamia, who built the city of Ur, and the ancient Egyptians, who are famous for the pyramids near the city of Giza and the royal sepulchers (tombs) of the Valley of the Kings at Thebes.