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Bronze Age	the stage or level of development of human culture that followed the Stone Age and was characterized by the use of bronze tools and weapons; about 3,500 B.C. to 1,000 B.C.
-lithic	of or pertaining to a particular period of the Stone Age.
Mesolithic	(sometimes l.c.) designating the Stone Age cultural period from about 10,000 to about 8,000 B.C., between the Paleolithic and the Neolithic periods, characterized by the use of small flint tools set in bone or wood.
Neolithic	(sometimes l.c.) designating the latter part of the Stone Age, from about 8,000 B.C. to about 3,500 B.C., characterized by the use of polished stone tools and the beginnings of farming.
Paleolithic	(sometimes l.c.) designating the earliest period of the Stone Age, from about 2 million B.C. to about 10,000 B.C., characterized by the use of primitive stone tools.
Stone Age	the stage of human culture when stone tools and weapons were made and used. The Stone Age dates from about two million B.C. to about 3,500 B.C.

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