Mulhouse
Mulhouse was a city in southern Alsace, made a free imperial city in 1275.
It joined the Alsatian Decapole in 1354, then left in 1515 to ally with the Swiss Confederation. Mulhouse adopted the Zwinglian Reformation in 1529, and its Swiss ties spared it French annexation in 1648. Customs blockade and revolutionary unrest ended its independence: in 1798 citizens voted to join France, and the Treaty of Mulhouse sealed the union.