Final answer:
René-Robert Cavelier, Sieur de La Salle's two key points were exploring and claiming the Mississippi River and its tributaries and establishing French settlements in the newly claimed territory.
Step-by-step explanation:
René-Robert Cavelier, Sieur de La Salle was a French explorer known for his expeditions in present-day United States and Canada. La Salle's two key points in his ideas that should be remembered are:
- Exploring and claiming the Mississippi River and its tributaries: La Salle's most significant achievement was his exploration of the Mississippi River. He claimed the entire Mississippi River basin, including the Ohio and Illinois Rivers, for France and named the region Louisiana in honor of King Louis XIV.
- Establishing French settlements: La Salle was determined to establish French settlements in the newly claimed territory. He founded several forts and towns, including Fort Crèvecoeur in Illinois and Fort Saint Louis in Texas. His efforts to establish a colony of French Huguenots in Texas ultimately failed, but his explorations and settlements laid the foundation for France's territorial claims in North America.