Question

who explored the entire length of the mississippi river for france?
a. samuel de champlain
b. louis xiv
c. robert cavelier de la salle
d. hernando de soto

Explanation:

Robert Cavelier de La Salle explored the entire length of the Mississippi River for France. Samuel de Champlain explored parts of Canada. Louis XIV was a king, not an explorer of the Mississippi. Hernando de Soto was a Spanish explorer who also explored parts of the region but not the entire length of the Mississippi for France.

Answer:

C. Robert Cavelier de La Salle