In 1422 Tvrtko signed a beneficial trade treaty with the Republic of Venice in December 1422 .
In 1422 Tvrtko discussed a range of plans for joint military action against Sigismund in Dalmatia .
In 1422 Tvrtko signed a beneficial trade treaty with the Republic of Venice in December 1422 , and discussed a range of plans for joint military action against Sigismund in Dalmatia .