Treaty of Mazza
| Treaty of Mazza | |
 Coat of Arms of Karnia-Ruthenia.
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| Created | 30 November 2022 |
| Ratified | 30 November 2022 |
| Location | Mazza, Taslavia |
| Authors | Emperor-King Oscar |
| Signers |  Emperor-King Oscar King Guilherme King Ari
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| Purpose | Establish the Goëtzër Monarchy as a formal political union. |
The Treaty of Mazza is a treaty signed between Emperor-King Oscar of Karnia-Ruthenia, King Guilherme of Taslavia and King Ari of Pannonia on 30 November 2022 in which it was agreed that the Goëtzër Monarchy, already a nomenclature in use to define the states ruled by the House of Götzö-Thomaz-Rocha would become a formal political entity.
The Goëtzër monarchy was created as a union of crowns with no uniform laws or shared institutions other than the Imperial and Royal Court itself; the territorial possessions of the monarchy were united only by virtue of a common dynasty. The idea behind its formation was that, despite the strong Karno-Ruthenian presence in micronational community, Taslavia and Pannonia lacked importance, and under the provisions of the treaty, the Karno-Ruthenian Government would represent the interests of Taslavia and Pannonia abroad in official capacity.
The treaty signed by the three rulers of the dynasty at that time, Oscar I of Karnia-Ruthenia, Guilherme I of Taslavia and Ari I of Pannonia at the Taslavian capital, Mazza, paved the way to the Karno-Ruthenian monarch established the undisputed hegemony over dynastic, but also political affairs.
To celebrate the signature of the treaty, on the following day was created the Order of the Three Golden Fleeces.