End of civil war between the sons of Bayezid I, is the beginning of many years of peace in Serbia, which enabled its further economic and cultural development. Stefan has not intervened militarily in conflicts in the coastal area, as well as in the wars that have swept Bosnia 1413th and brought the Ottomans into it. Sigismund's 1415th was launched a two counter-offensive in Bosnia while first, earlier this year failed to oust the Ottomans, the second, mid-year, ended as a complete disaster. Hungarian forces in July were broken at Lašva, and much of the nobility was captured and taken to Zvečan. They later managed to free themselves through negotiation and purchase, in which Stefan participated himself, who brokered the release of Jovan Morović.