Complex sentence: In 1916, Iyasu was deposed and replaced by Empress Zewditu, Regent during the minority of 24-year-old "Ras" Tafari Makonnen.
Split into simpler sentences: In 1916, Iyasu was deposed and replaced by Empress Zewditu. Zewditu was named Regent during the minority of 24-year-old "Ras" Tafari Makonnen.