The site of Sacajawea State Park had been important for trade and kinship. The Corps of Discovery were led there by Sacajawea in 1805. By the 1870s, settlers took the land and local tribes were sent off to reservations.
The confluence of the Snake and Columbia Rivers was a major uniting force for tribes of the Columbia River basin. It became a major site for settlers later, as the waterways provided a convenient mode of transportation.
The Sacajawea State Park area saw a lot of change between the surrender of Chief Joseph and the revelation of the Hanford nuclear operations only a century later: railroads, dams, and plutonium replaced trade and family.
The Vancouver Land Bridge site was rich with biodiversity prior to settlers’ advancement. Seated on a floodplain near Mt. St Helens, it was home to savanna, hardwood forest, and prairie. Today it is home to Ft Vancouver.