Official websites use .gov
A .gov website belongs to an official government organization in the United States.
Secure .gov websites use HTTPS
A lock () or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.
The Fort Union Trading Post was established in 1828 more that 20 years after the Lewis and Clark Expedition. However, the National Historic Site interprets the confluence area, described as "this long wished for spot" by Lewis and Clark.
Public Domain.
