The Treaty of Frankfurt was a treaty between the nations of Westphalia and the Netherlands.
Article I: Government
- Holy Roman Emperor Rudolf II, King of Westphalia, shall marry Sandra van Nassau-Orleans, placing Westphalia and the Netherlands in personal union upon he death of Johan van Nassau-Orleans.
- The legislative bodies of both Westphalia and the Netherlands shall be separate, and responsible for governing in their respective nations.
- The treasuries of both the Netherlands and Westphalia shall be separated, so that no state can allocate funds from the other's treasury without permission.
Article II: Colonies
- Each nation will be the nominal owner of their pre-existing colonies, although the empires of each nation will henceforth be viewed as one colonial empire, with each Westphalian colony under Dutch protection.
- Westphalian colonies shall become a part of the Dutch trade network, giving priority to Dutch merchants free of tariff.
- Colonies of both nations shall allow open trade with the other.
- Westphalia, along with the pre-existing cooperation with Hamburg, shall be allowed to use Dutch ports to supply and reach their colonies. The Netherlands shall finance and support Westphalian colonies.
- Fifty percent of Westphalian colonial profits shall be given to the Netherlands to reimburse them for their support in maintaining Westphalian colonies.
Article III: Military
- The Netherlands and Westphalia shall have a separate military, with independent standing armies.
- Despite a level of autonomy, the leadership of the Dutch and Westphalian militaries shall be unified, to coordinate military operations and to ensure cooperation and mutual success.
- Westphalia and the Netherlands shall agree to a defensive pact and military alliance, so that one must come to the aid of another during war.
- Declarations of war in offensive operations will require approval from both nations if requiring both nations' support.
Article IV: Ownership
- Territories already owned by Westphalia and the Netherlands shall continue to be ruled by their respective owners.
Article V: Separation
- Upon the death of Rudolf II, the Kingdom of the Netherlands shall pass from his lineage.
- Children of Rudolf II will be ineligible for the throne of the Netherlands.
- Upon separation of the union, military obligations to ensure each nation's mutual protection shall remain in effect, continuing a state of alliance and defensive pact.
- The Netherlands shall continue to support Westphalian colonies. Profits delivered to the Netherlands shall decrease by twenty percent, and if Westphalia has since acquired a port at the time of separation, it will decrease by another ten percent. Else payments will decrease by ten percent after fifty years of separation.
- The land owned by the Netherlands and Westphalia shall continued to be ruled by their respective owners, and neither nation shall make any attempt to claim the other nation's land post separation.