Who explored the St. Lawrence River and helped establish French claims in North America?

Jacques Cartier was the explorer who played a pivotal role in navigating the St. Lawrence River, which was crucial in establishing French claims in North America during the early 16th century. Cartier's voyages, beginning in 1534, led him to the shores of what is now Canada, where he claimed the region for France. His exploration of the St. Lawrence River not only mapped a substantial part of the interior of North America but also laid the groundwork for subsequent French colonial efforts in the territory, including trade and settlement.

His interactions with Indigenous peoples and his reports of the land's potential for resources sparked further interest in colonization, paving the way for future French explorers and settlers to follow. Cartier's contributions were foundational to the establishment of French influence in North America, which later influenced the cultural and political landscape of the continent.