This would allow the new western states to access the eastern port markets along the Ohio River and also would allow them to travel down the Mississippi River to the Gulf of Mexico were there would also be many other port markets.
The Start of the Voyage Lewis actually started his Journey from Pittsburgh then set out on the Ohio River, At Clarksville present day Indiana, he met up with Clark. Lewis and Clark spent the winter of 1803 at Camp Dubois on the east bank of the Mississippi River, upstream from St. Louis. On May 14, 1804, the Lewis & Clark Expedition began its trip up the Missouri River. As they are traveling up they start to write in their journals, and also draw maps of where they have traveled because they have to show where they went to show the measurements of the land and also a key on how to get back. They also have wrote a lot about the wildlife environment in there Journals. American people haven’t explored the West yet so it was very foreign to them so anything that was different was to be document so Jefferson could make note and see the discoveries. North of the mouth of the Platte River on August 3 Lewis and Clark have their first interactions with Native Americans, A small group of Oto