Complex sentence: Another land reform of Japan was carried out in 1947 (during the occupied era after World War II) under instructions of SCAP from a proposal from the Japanese government which had been prepared before the defeat of the Greater Japanese Empire.
Split into simpler sentences: Another land reform of Japan was carried out in 1947 (at the occupied era after World War II) by the instructions of SCAP by the proposal from the Japanese government. It was prepared before the defeat of the Greater Japanese Empire.