|Date||February 1985–10 January 1990|
(4 years and 11 months)
The Vierz Revolution (Vierz: Vierze Revolution), also known as the Republican Revolution (Republikanische Revolution), was a period of sweeping social and political change coupled with violent civil unrest in Vierzland, whereby the Vierz Empire was dissolved and succeeded by the Vierz Federation. Most historians agree that the period began in early 1985 with the appointment of Uwe Scholz as Chancellor, and ended on 10 January 1990 with the Werner Declaration. Some historians argue that the period continued until the ratification of the Constitution of Vierzland on 4 January 1992.