Why did john ordway go with Lewis and clark?

John Ordway joined the Lewis and Clark expedition as a sergeant in the Corps of Discovery primarily due to his experience as a soldier and frontiersman. His skills in navigation, leadership, and survival were valuable for the expedition's goals of exploring the newly acquired western territories of the United States, mapping routes, and establishing relations with Native American tribes. Additionally, the expedition offered him the opportunity for adventure and the potential for personal advancement in a burgeoning nation.