Father Marquette and Joliet were two French explorers who set out on a historic journey to explore the Mississippi River in the 17th century. Synonyms for the duo include pioneers, adventurers, trailblazers, voyagers, and discoverers. They were also ambassadors of French colonization, opening up new trade opportunities and claiming land for their country. Other phrases that could be used to describe them include explorers of the New World, brave travelers, and intrepid adventurers. Their legacy lives on through the landmarks, cities, and monuments named in their honor across the United States and Canada.