Complex sentence: The current Constitution traces its origins to the end of the Second Sino-Japanese War when the impending outbreak of the Chinese Civil War pressured Chiang Kai-shek into enacting a democratic Constitution that would put an end to KMT party rule.
Split into simpler sentences: The current Constitution traces its origins to the end of the Second Sino-Japanese War. The impending outbreak of the Chinese Civil War pressured Chiang Kai-shek into enacting a democratic Constitution that would end KMT one-party rule.