Complex sentence: Carpetbaggers from Mainland China dominated nearly all industry, political and judicial offices, displacing the Taiwanese who were formerly employed; and many of the ROC garrison troops were highly undisciplined, looting, stealing and contributing to the overall breakdown of infrastructure and public services.
Split into simpler sentences: Carpetbaggers from Mainland China dominated nearly all industry, political and judicial offices, displacing the Taiwanese who were formerly employed. Many of the ROC garrison troops were highly undisciplined, looting, stealing and contributing to the overall breakdown of infrastructure and public services.