The Treaty of Frankfurt was signed May 10, 1871, at the end of the Franco-Prussian War.
The treaty:
- confirmed the final frontier between France and Germany
- set a framework for the withdrawal of German troops from certain areas
- regulated the payment of the French War Indemnity
- the use of navigable waterways in connected to Alsace-Lorraine
- trade between the two countries.
- the return of prisoners of war