In 1887, Congress established a commission to regulate the railroads by passing "The Interstate Commerce Act", which was mainly intended to keep railroad companies from becoming monopolies.
Answer:
Throughout the mid-1880s, the Northern Pacific pushed to reach Puget Sound directly, rather than by means of a roundabout route that followed the Columbia River. Surveys of the Cascade Mountains, carried out intermittently since the 1870s, began anew.
Confederation, I guess. European Union for example