Complex sentence: Following this, revolts broke out in Persis, the homeland of the Persians and Darius and then in Elam and Babylonia, followed by in Media, Parthia, Assyria, and Egypt.
Split into simpler sentences: Following this, revolts broke out in Persis, the homeland of the Persians and Darius. With all these ongoing revolts, revolts broke out in Media, Parthia, Assyria, and Egypt.