French explorers discovered Mississippi and St. Lawrence rivers.
B.Mississippi and St. Lawrence
Explanation:
French pilot Jacques Cartier turns into the principal European pioneer to find the St. Lawrence River right now, Canada. Cruising west of Newfoundland he "found" the St. Lawrence River and investigated the locale in three journeys somewhere in the range of 1535 and 1541.
Cartier was charged by King Francis I of France to investigate the northern American terrains looking for wealth and the reputed Northwest Passage to Asia. Cartier set sail in April with two boats and 61 men and showed up 20 days after the fact. During that first endeavor, he investigated the present Anticosti Island, which Cartier called Assomption.