those of Igbo descent.
The violence against the Igbo increased their desire for autonomy. By May 1967, the Eastern Region voted to declare independence as a state called the Republic of Biafra, under the leadership of Lt Colonel Emeka Ojukwu. The Nigerian Civil War began as the Nigerian (Western and Northern) side attacked Biafra (South-eastern) on 6 July 1967 at Garkem. The 30 month war, with a long siege of Biafra and its isolation from trade and supplies, ended in January 1970. Estimates of the number of dead in the former Eastern Region are between 1 and 3 million people, from warfare, disease, and starvation, during the 30-month civil war .
Military era
During the oil boom of the 1970s, Nigeria joined OPEC, and the huge revenue generated made the economy richer, although the military administration did nothing to improve the standard of living of the population, or to help the small and medium businesses, or even invest in the infrastructure. As oil revenues fueled the rise of federal subventions to states, the federal government became the centre of political struggle and the threshold of power in the country. As oil production and revenue rose, the Nigerian government created a dangerous situation as it became increasingly dependent on oil revenues and the international commodity markets for budgetary and economic concerns; it did not build economic stability. That spelled doom to federalism in Nigeria.
Beginning in 1979, Nigerians participated in a brief return to democracy when Obasanjo transferred power to the civilian regime of Shehu Shagari. The Shagari government became viewed as corrupt and incompetent by virtually all sectors of Nigerian society. The military coup of Muhammadu Buhari shortly after the regime's fraudulent re-election in 1984 was generally viewed as a positive development by most of the population. Buhari promised major reforms, but his government fared little better than its predecessor
