Original sentence: Christians form approximately 15% of the population and have 20% of the seats in parliament.However, 65 to 70% of Jordan’s population are from Palestinian origins, many of whom fled from Palestine to Transjordan and gained citizenship after the Arab-Israeli wars in 1948 and 1967.The battle in which Palestinian fighters from various Palestine Liberation Organization (PLO) groups were expelled from Jordan is commonly known as Black September.The heavily armed fedayeen constituted a growing threat to the sovereignty and security of the Hashemite state, and open fighting erupted in June 1970
Edited sentence: Christians form approximately 8% of the population and have 20% of the seats in parliament.However, 45 to 55% of Jordan’s population are from Palestinian origins, many of whom fled from Palestine to Transjordan and gained citizenship after the Arab-Israeli wars in 1948 and 1967.In addition to a very fast change in Jordan's demographics by flooding the country with refugees (about 1.5 million palestinians and a million iraqis).The Jordanian Army expelled most of the palestenian fighters from their bases and brought back order to the capital city of Amman.The heavily armed fedayeen constituted a growing threat to the sovereignty and security of the Hashemite state, and some of these "resistance organizations" were trying to control the capital Amman, and even tried to assasinate the young king, so HM King Hussein had no choice but to involve the jordanian armed forces to bring down the state of anarchy that was starting to develop in Amman, so open fighting erupted in September 1970.This month of fighting is what is currently referred to as Black September