Complex sentence: It details the growth and prospering of the Nestorian Church despite alternating periods of persecution and toleration under the Zoroastrian rulers of Sassanid Persia, then celebrates the triumph of the Muslim conquerors in the 8th century as liberators from increasing Zoroastrian oppression.
Split into simpler sentences: It details the growth and prospering of the Nestorian Church despite alternating periods of persecution and toleration under the Zoroastrian rulers of Sassanid Persia. The work then celebrates the triumph of the Muslim conquerors in the 8th century as liberators from increasing Zoroastrian oppression.