Define paleolithic era

The Paleolithic or Palaeolithic or Palæolithic, also called the Old Stone Age, is a period in prehistory distinguished by the original development of stone tools that covers c. 99% of the period of human technological prehistory.

of or relating to the earliest period of the Stone Age characterized by rough or chipped stone implements.

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What does Paleolithic Age stand for?

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Paleolithic Period, also spelled Palaeolithic Period, also called Old Stone Age, ancient cultural stage, or level, of human development, characterized by the use of rudimentary chipped stone tools.

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president thomas jefferson commissioned the expedition shortly after the louisiana purchase in 1803 to explore and to map the newly acquired territory, to find a practical route across the western half of the continent, and to establish an american presence in this territory before britain and other european powers