<Tr> <Th> 1945--present Taiwan </Th> </Tr> <Tr> <Td> <Ul> <Li> Retrocession of Taiwan </Li> <Li> February 28 Incident </Li> <Li> White Terror </Li> <Li> Korean War </Li> <Li> First Taiwan Strait Crisis </Li> <Li> Vietnam War </Li> <Li> Second Taiwan Strait Crisis </Li> <Li> Project National Glory </Li> <Li> Three Noes </Li> <Li> Lieyu massacre </Li> <Li> Third Taiwan Strait Crisis </Li> <Li> Anti-Secession Law </Li> <Li> 100th anniversary </Li> <Li> Sunflower Student Movement </Li> <Li> 2015 Ma--Xi meeting </Li> <Li> 2017 Summer Universiade </Li> </Ul> </Td> </Tr> <Ul> <Li> Retrocession of Taiwan </Li> <Li> February 28 Incident </Li> <Li> White Terror </Li> <Li> Korean War </Li> <Li> First Taiwan Strait Crisis </Li> <Li> Vietnam War </Li> <Li> Second Taiwan Strait Crisis </Li> <Li> Project National Glory </Li> <Li> Three Noes </Li> <Li> Lieyu massacre </Li> <Li> Third Taiwan Strait Crisis </Li> <Li> Anti-Secession Law </Li> <Li> 100th anniversary </Li> <Li> Sunflower Student Movement </Li> <Li> 2015 Ma--Xi meeting </Li> <Li> 2017 Summer Universiade </Li> </Ul> <Li> Retrocession of Taiwan </Li>

What were the two main political movements of 1920s and 1930s china