Nigerian nationalism most serious threat to the Nigerian unity since Nigeria became independent in 1960, as other ethnic groups threatened that they too would also seek secession should Biafra successfully secede. Nigeria responded to the separatist threat with a military campaign against the Biafran government, resulting in the Nigerian Civil War from 1967 to 1970. The war ended with the defeat of the Biafran separatists. Between one and three million Nigerians died in the war. The 19th century did not witness the emergence of any political organization that could help in airing the grievances and expressing the aspirations of Nigerians on a
Christ the King College, Onitsha and leadership skills from the vast pool of Nigerian youths and in a Roman Catholic tradition and environment. The first principal of the college was Rev Fr. Leo Brolly and the first student to be admitted into the college was Peter Charles Obi Nwagbogu CKC was affected adversely by the Nigeria civil war (1967–1970). Most of its infrastructure was destroyed. The school was taken over by the East Central State Government in 1973 and renamed "Heerey High School", after its founder. However, following representations by its alumni, the school's name was changed back to its original name, "Christ The King