Complex sentence: At the counsel of Preslav in 893 his third son Simeon I, born after the Christianization was installed on the throne and the capital was moved from Pliska to Preslav as a symbol of the abolition of the old religion.
Split into simpler sentences: At the counsel of Preslav in 893 his third son Simeon I, born after the Christianization, was installed on the throne. The capital was moved from Pliska to Preslav as a symbol of the abolition of the old religion.