Complex sentence: The story of Darius spans half of book 3, along with books 4,5 and 6; it begins with removal of the alleged usurper Gaumata and continues to the end of Darius's reign.
Split into simpler sentences: The story of Darius spans half of book 3, along with books 4,5 and 6. It begins with removal of the alleged usurper Gaumata and continues to the end of Darius's reign.