it depends who "he" is
Colorodo River
first to explore St. Lawrence River Answer this question
mississippi river
The Mississippi River and the St. Lawrence River
Dr. David Livingstone, from Britain was the first European to explore the Zambezi River.
Henry Hudson did not explore the st. Lawrence river. Samuel De Champlain did!
No, Joliet did not explore the St. Lawrence River for France. He is known for exploring the Mississippi River, along with Jacques Marquette, in the 17th century.
james river
He was the first the explore the St. Lawrence river.
The Mississippi River valley
1534
1914