In 1415, the ruler of Wallachia [1] Mircea the Old agrees to pay the Ottoman Empire an annual harach [2] of 3,000 gold, after, as a result of punitive expeditions to Wallachia, the Turks captured Turna (Severin) and Braila, turning Giurgia into a raya[3], forcing the ruler of Wallachia to conclude peace. In 1420, after a major campaign in Wallachia, during which the Turks defeated and executed the ruler Mihai, the successor of the ruler Mircea on the throne, the Ottomans reached the borders of the Moldavian Principality. In 1420, the Turkish fleet attacked Chetatya Albe (future Akkerman), but the fortress was recaptured by the Moldovan army. The second attempt of the Turkish fleet to capture...