Answer:
to protect France's claim to the lower Mississippi River
to continue to explore the region
Explanation:
Jean-Baptiste Le Moyne, Sieur de Bienville was the younger brother of Pierre Le Moyne d’Iberville, during their expedition formed the French settlement in Louisiana. However, following the Iberville’s final return to France, Bienville chooses to stay behind because of the following:
1. to protect France's claim to the lower Mississippi River
2. to continue to explore the region
the Mongolian invasions ruined peoples lives and damaged sometimes even destroyed cities, the Christian invasion made people turn from Buddhism to Christianity and sometimes caused christian rebellions to rise up.