Complex sentence: In 1415, Mehmet I re-captured İzmir for the Ottomans for the second time and with the death of the last bey of Aydın, İzmiroğlu Cüneyd Bey, in 1426 the city fully passed under Ottoman control.
Split into simpler sentences: In 1415, Mehmet I took back İzmir for the Ottomans for the second time. With the death of the last bey of Aydın, İzmiroğlu Cüneyd Bey, in 1426 the city passed fully under Ottoman control.