Complex sentence: Therefore due to the trend of the campaign for modernization from the late 1910s to 1930s, many young native Taiwaness students went to Japan or Paris and indeeed they became the pioneeers in the era of the cultural movement in Taiwan.
Split into simpler sentences: Therefore due to the trend of the campaign for modernization in Taiwan, many young native Taiwaness students went to study in Japan from the late 1910s and some went to Paris. And indeeed they became the pioneeers in the era of the cultural movement in Taiwan.