The progressive movement was sometimes misguided in its interaction with racial miniorities because progressive reformers

president thomas jefferson commissioned the expedition shortly after the louisiana purchase in 1803 to explore and to map the newly acquired territory, to find a practical route across the western half of the continent, and to establish an american presence in this territory before britain and other european powers

payments were made after the 1940s.

in the 1980s, a commission held investigations and made recommendations.