Answer:
Born in Rouen, France, on November 22, 1643, René-Robert Cavelier, Sieur de La Salle was an explorer best known for leading an expedition down the Illinois and Mississippi rivers. He claimed the region watered by the Mississippi and its tributaries for France and named it Louisiana after King Louis XIV.Jan 27, 2016
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Explanation:
They spread knowledge of medicine, mathematics, and other sciences. The hindu-arabic mathematical numerals 0-9 is still used today.
I believe it is C. Memorials to powerful former leaders
There would be new farming and enclosure movement