Episode 2 of 4

South Dakota Admission

When: November 1889
Where: Pierre, South Dakota
Part of: North Dakota, South Dakota, Montana and Washington admitted as U.S. states

South Dakota entered the Union following the Enabling Act of 1889, which split Dakota Territory into two states. Its convention center was changed from Sioux Falls to Pierre.

The Enabling Act of 1889 permitted the splitting of the Territory of Dakota into two states, North Dakota and South Dakota. The initial convention center chosen for South Dakota was Sioux Falls, but this was later changed to the city of Pierre. The state's admission followed the constitutional process established under the Act, though the supplied passages do not state the specific admission date or ordinal position.

Sources

Enabling Act of 1889 Wikipedia, revision of 2026-09-28

Machine-drafted from the cited Wikipedia passages and checked by a reviewing model, not by a human editor. Every passage cites the revision it was written from; dates and places follow those passages.