Complex sentence: Like many of the Crusaders and the Crusade's themselves, Raymond of Aguilers motives during the Crusade have been questioned, particularly in regards as to why he wrote the "Historia Francorum qui ceperunt Iherusalem".
Split into simpler sentences: Like many of the Crusaders and the Crusade's themselves, Raymond of Aguilers motives during the Crusade have been questioned. This is particularly true in regards as to why he wrote the "Historia Francorum qui ceperunt Iherusalem".