The compactos are a document signed by the bishop of Trento Alberto di Ortenburg and Rodolfo IV, Duke of Austria on September 18, 1363, with which it was sanctioned a military alliance between the bishopric of Trento and the Duchy of Austria in legal terms expressed the military supremacy of the Habsburg House on the Prince Bishop, marking for them a restriction of foreign and military politics, but respecting the formal secular autonomy of the principality (which later sought to get rid of the protection, with alternate outcomes).

In 1363 the direct descendence of the counts of Tyrol had been extinguished and the county had been united to the Duchy of Austria, ruled by the Habsburgs. These succeeded in appointing bishop Alberto of Ortenburg to their advantage. In December 1365 the temporal powers were returned to the bishop, but the Count of Tyrol also intervened later in the vicissitudes of the bishopric principality as the southern frontier of this was often subject to tensions.

In 1390 a new Viennese bishop, Giorgio of Liechtenstein, was elected to the Duke of Austria Alberto III. Pope Bonifacio IX, weak and needy allies, agreed and granted the new "compact", drawn up in 1399. The treaty was renewed in 1454 by bishop Georg Hack and then again in 1468 and 1511. Notemodify wikitesto Bibliografiamodifica wikitesto

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