During the reign of Sultan Mehmet the Ottoman navy was established for the first time in Gallipoli. This small navy was sent against the Duke of Christian Naksos in the spring of 1416 under the command of Bush Bey, who constantly attacked the Ottoman merchant ships in the Aegean Sea. But the fleet suddenly changed course and followed the merchant ships of Venice that were returning by commodity from Trabzon. The merchants managed to escape to Negroponte, Venice's base in the Aegean. Although the Ottoman fleet attacked this lima, it did not produce results. Meanwhile, the Venetian fleet under the command of Petro Loredan was nearby, and this fleet followed the fleet of Bush Bey to Gallipoli. On the morning of May 29, they launched the first sea battle between the two nations in front of Canakkale with the Ottoman navy and the Venice fleet. This war lasted until the 2nd of the afternoon and ended with the victory of the Venetians. The Venice fleet destroyed all the ships of the new Ottoman navy. Only six galleys and nine calyxes surrendered to the Venetians. The Venetians killed all of the Ottoman seamen, including Bush and all the ships' chieftains. The fears of the Venetians to lift the monopoly of Venetians over the Aegean Sea, and the efforts to prevent it, have led to this never-ending, hunhar attitude. As a result, the first peace treaty was made between the Ottoman and Venetian states. In 1417 he passed on to Venice, where Mehmet Chalabi was sent to Venice in order to sign this agreement and met with a very big ceremony in which the state paid the cost of the ambassador in Venice. The problem of Sultan Mehmet Chalabi in 1418-1419 was the revolt of Sheikh Bedrettin and his supporters, who had been the ex-Simavan fate and Shaykh al-Islam during the reign of Musa Chalabi in Edirne. Sheikh Bedrettin family was expelled to Iznik. In 1418 he escaped and went to Candar, but he had no idea here. He went to Deliorman in Dobruca via Sinop-Crimea-Wallachia. He provided money and troops support for his son, Mihail, who replaced Wallachian Prince Mirce. Here, an army of nomads who fit their ideas into their radical doctrines has begun to gather and open the rebellion flag. Meanwhile, Borkluca Mustafa, who was left behind as a caliph in Sheikh Bedrettin in Anatolia, had begun a rebellion in Karaburun Peninsula near Izmir and Torlak Kemal in Manisa. Beyazit Pasha and Sehzade Murat were sent to them. Grand Vizier Beyazit Pasha has taken Borkluca, which has a very strong resistance in Karaburun. Sehzade Murat defeated Torlak Kemal. These two rebels were hanged and executed. However, there were still people who believed in the ideas and suggestions of Sheikh Bedrettin in these regions. From there, Beyazit Pasha, who passed through Rumelia, went to Sheikh Bedrettin and the Sheikh Bedrettin took over without showing resistance. As a result of a trial in Serez, Sheikh Bedrettin was executed there.
Sultan 1.Mehmet took attention again to Anatolia. Saruhan (1415) and Mentese (1416) had been removed from the ranks before. In the south he came to the region of Antalya to the Teke son's and seized this territory. In Western Anatolia, only the Ottomans had always helped the Germiyans, but the Afyonkarahisar and Kutahya cities belonging to this territory were given to the Ottoman administration. Mehmet Chalabi's last concern was that a person who claimed to be his brother Mustafa Chalabi, who had disappeared at the end of the Ankara War, emerged 18 years after this war. This person, whom many historians admitted to being the real Mustafa Chalabi, but later called the Phony Mustafa with the Ottoman propaganda, declared himself as the Ottoman sultanate in 1418 in Tessera and Salonica. Grand Vizier Beyazit Pasha was dealing with Sheikh Bedrettin. Mehmet Chalabi went to Trakya and began to walk on Mustafa and Mustafa's army broke down and erased. Mustafa had to take shelter in the Byzantines. Sultan Mehmet I was paralyzed on horseback during a hunt in Edirne on May 26, 1421, fell and was wounded. He was willing to hide his death and bring his son Murat. He was most distraught from the Pseudo-Mustafa in Thessaloniki, and the news of death was concealed for 42 days until Murat, Governor of Amasya, reached Bursa. He was the first sultan to hide his death among the Ottoman Sultans. In order to appease the troubled soldiers who fall into a state of doubt and their rebellion is difficult, it is rumored that a caftan was worn and a cowl was put in front of it and the arms that were placed in front of the window were played. 2.Murat After coming to Bursa and coming to the throne, the funeral was taken to Bursa from Edirne and buried in the Green Tomb.