Complex sentence: Other characters can sometimes detect the change between Alicia and Silmeria by their voices and mannerisms, so many of Dipan's citizens believe Alicia was mad, which led her father, King Barbarossa, to exile her from the kingdom.
Split into simpler sentences: Other characters can sometimes detect the change between Alicia and Silmeria by their voices and mannerisms. Because of this, many of Dipan's citizens believe Alicia was mad, which led her father, King Barbarossa, to exile her from the kingdom.