Constitution of Nigeria restored democratic rule to Nigeria, and remains in force today. In January 2011, two amendments of the 1999 constitution were signed by President Goodluck Jonathan, the first modifications since the document came into use in 1999. http://nigerianfinder.com/historical-development-of-the-nigerian-constitution/ Constitution of Nigeria The Constitution of Nigeria is the supreme law of the Federal Republic of Nigeria. Nigeria has had a series of constitutions. The current constitution was enacted on 29 May 1999, inaugurating the Nigerian Fourth Republic. Nigeria's first constitutions were enacted by order in council during the colonial era, when the country was administered as a Crown Colony. The constitutions enacted
President of Nigeria as head of government, and a National Assembly, comprising a Senate and House of Representatives. In October 1979, after more than 13 years of military rule, Nigeria returned to democratic rule. The National Party of Nigeria emerged victorious in the presidential election and Alhaji Shehu Shagari was elected President. On December 31, 1983, the military overthrew the Second Republic. Major General Muhammadu Buhari emerged as the Chairman of the Supreme Military Council (SMC), the new Head of State. In August 1985, General Buhari's government was peacefully overthrown by Army Chief of Staff, Major General Ibrahim Babangida. Babangida became the President