In 1682 he claimed the entire Mississippi Valley for France; 5 years later, his own men killed him in Texas
He was responsible for 
opening the Mississippi valley for ... WalmartPosted 5 days 19 hr ago... [DOC] [TLE] La Salle: Discovery of a Lost Explorer - JStor [PAR] France bound for the lower Mississippi, which he had explored from the ... of La 
Salle in Texas, 1684," Louisiana History, 19 (1978): 5-32.