2015 Nigerian general election north-eastern states. The government closed its land and sea borders from midnight on 25 March until the end of the polling date. The election was extended to 29 March due to delays and technical problems with the biometric card readers. It was the most expensive election ever to be held on the African continent. Nigeria is the continent's most populous country, has its largest economy and is its leading oil producer. Opposition candidate Muhammadu Buhari won the presidential election by more than 2.5 million votes. Incumbent President Goodluck Jonathan conceded defeat on 31 March, before the results from all 36
African Cross Country Championships West Africa competing". A number of smaller regional championships have been held in Africa: the East African Cross Country Championships and the Maghreb Cross Country Championships in North Africa are both well-established competitions. West and Central African competitions have also been held in past years. African Cross Country Championships The African Cross Country Championships is a regional cross country running competition for athletes from Africa. The competition had a one off edition in 1985 in Nairobi, Kenya, and the medallists were mostly from the host nation. Following an announcement by the International Association of Athletics Federations (IAAF) that the IAAF