He came in 1980
1993
Mass production
She was a guide and translator for Lewis and Clark.
he farted really loud
they help us know more about our religion
They contributed the atomic bomb which had a major impact on the citizens of Hiroshima and Nagasaki.
By writing articles and memoranda, he convinced the US that the Soviet Union was hostile.
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Native Americans.
i would say drugs
Food production is the primary contribution, though raw material production is also very important.