Answer:
for the first question is Boundaries of the Louisiana Purchase and Expedition Route ... It was here on August 3 that Lewis and Clark had their first council with Native Americans, On August 12, Lewis ascended the final ridge to the Continental Divide.
for the second question the answer is Thomas Jefferson believed Native American peoples to be a noble race who were "in body and mind equal to the whiteman" and were endowed with an innate moral sense and a marked capacity for reason. Nevertheless, he believed that Native Americans were culturally and technologically inferior.
Step-by-step explanation: