Complex sentence: But his son, Maxtla, soon usurped the throne and turned against factions that opposed him, including the Mexica ruler Chimalpopoca, who died shortly thereafter, possibly assassinated by Maxtla.
Split into simpler sentences: But his son, Maxtla, soon usurped the throne and turned against factions that opposed him, including the Mexica ruler Chimalpopoca. The latter died shortly thereafter, possibly assassinated by Maxtla.