Rivers.
Lewis and Clark had to cross the Rocky Mountains to reach the Pacific Ocean. This rugged and challenging terrain presented a significant geographical barrier for their expedition.
meriwether lewis
NO! Pacific Ocean
Lewis and Clark had to overcome the Missouri Falls, where they had to carry their supplies over and around. The Missouri Big Bend, which was loaded with sand bars so their slaves had to get out and pull the boats across. And the Rocky Mountains, a huge mountain range with no fast traveling river through it.
mountains
Lewis and Clark had to travel over the Rocky Mountains during their expedition. They crossed the Bitterroot Range in present-day Montana and Idaho, encountering rugged terrain and harsh weather conditions along the way.
every where
1804.
1804
Sacagawea
Lewis and Clark explored the West helping others to understand the terrain, etc.
The Rocky Mountains and the Columbia River would have presented major obstacles to the Lewis and Clark expedition. The rugged terrain and the swift currents would have made travel difficult and dangerous for the explorers.