I just read about this a week ago and I can't remember for sure but I think Lewis and Clark were sent to explore, and make trails in the area that was purchased in the Louisiana purchase. So I think Lewis and Clark came second.
They discovered the Louisiana purchase!
Congress
Lewsi & Clark
Lewis. #2 is Clark of The Lewis and Clark Expedition.
Louis and clark,
they went on with there life and then came in the Louisiana purchase.
Lewis and clark
Lewis and Clark set about on their expedition in 1803. This was soon after Jefferson's acquisition in the Louisiana Purchase.
The expedition of Lewis and Clark did indeed go beyond the Louisiana Purchase. It went all the way to the Pacific Ocean and included what is now Idaho, Washington and Oregon which were not not part of the purchase.
Lewis and Clark did not have complete knowledge about Louisiana before their expedition. They were given some information by Thomas Jefferson, but their journey aimed to explore and document the unknown territories of the Louisiana Purchase, including geography, plants, animals, and interactions with Native American tribes.
Louisiana Purchase and Lewis Clark expedition
secured approval to send Lewis and Clark on an expedition through upper Louisiana.