Complex sentence: Mustafa was recognized by many of the people as the most talented of all the brothers and was supported by Ibrahim, who became Suleiman's Grand Vizier in 1523.Hürrem was usually held at least partly responsible for the intrigues in nominating a successor.
Split into simpler sentences: Mustafa was recognized by many of the people as the most talented of all the brothers and was supported by Ibrahim, who became Suleiman's Grand Vizier in 1523. Hürrem has usually been held at least partly responsible for the intrigues in nominating a successor.