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Laetoli even reveals footprints of humans from 3.6 million years ago.

Some sites also contain evidence of the earliest use of simple tools.

Archaeology is an important field of anthropology, which is the broad study of human culture and biology.

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These remains include the fossils (preserved bones) of humans, food remains, the ruins of buildings, and human artifactsitems such as tools, pottery, and jewelry.From their studies, archaeologists attempt to reconstruct past ways of life.Archeology is the scientific study of past human culture and behavior, from the origins of humans to the present.Archaeology studies past human behavior through the examination of material remains of previous human societies.Archaeologists have also recorded how primitive forms of humans spread out of Africa into Asia about 1.8 million years ago, then into Europe about 900,000 years ago.

The first physically modern humans, Homo sapiens sapiens, appeared in tropical Africa between 200,000 and 150,000 years agodates determined by molecular biologists and archaeologists working together.

Archaeology became established as a formal discipline in the 19th and early 20th centuries.

At that time, most archaeological work was confined to Europe, to the so-called cradle of civilization in southwestern Asia, and to a few areas of the Americas.

On rare occasions, however, delicate objects have been preserved.

For example, fabrics and flowers were found in the celebrated tomb of Tutankhamun, an Egyptian pharaoh who was buried in 1323 BC.

Today, archaeologists study the great cultural diversity of humanity in every corner of the world.