# Yellowstone Expedition

> expedition to the American frontier in 1819 and 1820 to establish a military outpost at the mouth of the Yellowstone River in present-day North Dakota

**Wikidata**: [Q8051990](https://www.wikidata.org/wiki/Q8051990)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Yellowstone_expedition)  
**Source**: https://4ort.xyz/entity/yellowstone-expedition