What are the significance of Archaeological discoveries in East Africa to our understanding of its prehistory?

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The significance of archaeological discoveries in East Africa to our understanding of its prehistory is that "archeologists have found artifacts that help historians correct a false understanding of East Africa’s history."

In recent years, scientists and archeologists have made some important discoveries that changed the original perception of the evolution of humans that started in that region of Africa.

Human fossils have been dated as far as 200,000 years ago. We are talking about H*mo Sapiens fossils.

The earliest fossilized human remains have been found in Eastern Africa.

Ethiopia is the place in Eastern Africa where the earliest fossilized human was found. Anthropologists have named the skeleton "Lucy," a 3.2 million years ape. Lucy was an  Australopithecus afarensis early human. It was discovered by Donald C. Johanson, in 1974, close to Hadar, Ethiopia.  

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question - in the 1900s there were two competing views about the environment that often pitted industrialist and conservationist against one another. how were these two competing views demonstrated by the environmental policies of president roosevelt and president taft?

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