Who explored the st Lawrence river and established a trading post at Quebec?

Jacques Cartier was the French explorer who first navigated the St. Lawrence River in the early 16th century. He made significant voyages in 1534 and 1535, mapping the river and its surroundings. Samuel de Champlain later established a permanent settlement and trading post at Quebec in 1608, which became a crucial center for French colonization and trade in North America.