The remaining French part formed the Territoire de Belfort in 1922; 1919, it was reverted to France (Treaty of Versailles) but remains administratively separated from Belfort.
Bagian Prancis sisanya membentuk Territoire de Belfort Pada 1919, dikembalikan ke Prancis (Perjanjian Versailles) namun tetap terpisah dari Territoire-de-Belfort.