Complex sentence: After the change in 1910 in one Haidju-school education according to the notions of Japan, which formally had sealed this year, the colonization of Korea, he was one years later, at age 11 married to his wife, Choe Mun-ho.
Split into simpler sentences: After the change in 1910, in one Haidju-school education according to the notions of Japan, which had formally sealed, that year, the colonization of Korea. One year later, at age 11, he was married to his wife, Choe Mun-ho.