Réponse :
The expedition was sponsored by the American Philosophical Society (APS). Lewis and Clark received some instruction in astronomy, botany, climatology, ethnology, geography, meteorology, mineralogy, ornithology, and zoology. During the expedition, they made contact with over 70 Native American tribes and described more than 200 new plant and animal species.
Bon j'espere que j'ai pu t'aider :)
Bonne journee.
