👉 Champlain (1649-1705) was a French explorer, mathematician, and navigator who lived during the 17th century. He is best known for his contributions to navigation and exploration of North America, which he did through the efforts of his brother, Jacques Cartier. Champlain's journey began in 1664 when he sailed with Jacques Cartier up the St. Lawrence River. Together they navigated the river, mapping out its