What were some of the discoveries that Lewis and Clark made along the way of their expedition?
By the end of the expedition, Lewis and Clark found and categorized 122 new animals and 178 plants, mapped the geography, and achieved friendlier relations with the natives. However, they did not find an all water route to the Pacific Ocean.
List of plants discovered: http://wiki.answers.com/Q/What_plant_life_did_Lewis_and_Clark_find_on_their_expedition
List of animals discovered: http://wiki.answers.com/Q/What_animal_life_did_Lewis_and_Clark_encounter_during_their_expedition