Complex sentence: As the new ruler of the Roman Empire, he vowed to restore liberties which had been curtailed during the autocratic government of Domitian; however, Nerva's brief reign was marred by financial difficulties and his inability to assert his authority over the Roman army.
Split into simpler sentences: As the new ruler of the Roman Empire, he vowed to restore liberties which had been curtailed during the autocratic government of Domitian. However, Nerva's brief reign was marred by financial difficulties and his inability to assert his authority over the Roman army.