Task: Sentence Expansion
Input (English): After the Kuomintang ( KMT ) , the governing party of China , unified the country in the 1920s , the civil war between it and its past ally Communist Party of China began .
Output (English): The Kuomintang ( KMT ) party in China launched a unification campaign against regional warlords and nominally unified China in the mid-1920s , but was soon embroiled in a civil war against its former Chinese Communist Party allies and new regional warlords .