Complex sentence: As long ago as the Meiji Restoration, there had been dissatisfaction regarding the discrepancy between spelling and speech, but it was in 1946 immediately following World War II that modern kana usage was instituted as part of a general orthographic reform.
Split into simpler sentences: As long ago as the Meiji Restoration, there had been dissatisfaction regarding the discrepancy between spelling and speech. It was in 1946 immediately following World War II that modern kana usage was instituted as part of a general orthographic reform.