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Chiang Ching-kuo became chairman of the Kuomintang (KMT) in 1975, succeeding his father, Chiang Kai-shek. This marked a significant transition within the KMT and the broader political landscape of Taiwan. Chiang Ching-kuo introduced several reforms and policies, including promoting economic growth, initiating political liberalization, and improving relations with other countries. His leadership played a crucial role in shaping Taiwan's development during a transformative period in its history.