Pre-colonial history of Northern Nigeria Pre-colonial history of Northern Nigeria The pre-colonial history of Northern Nigeria encompasses the history of Northern Nigeria before the advent of European explorers and the subsequent pacification of Northern Nigeria by the British Empire. In pre-historical times, the area known as Northern Nigeria was home to the Kwatarkwashi/Nok culture. Elements of human civilisation have also been discovered around the Niger River near Kainji Dam. Around the 7th century the Kabara Nation under the control of the Kabara's emerged in Northern Nigeria. Around the 9th century an upheaval of unexplained origins saw a transference of power from these matriarchal monarchs and
Toei 12-000 series platform edge doors installed at every station. LCD information displays are provided above the doors. The trains entered service on 6 April 2015, with six units to be delivered by June 2016, replacing older 12-000 series trains. The last remaining first-batch trains (sets 01 to 06) are scheduled to be withdrawn by the end of June 2016. The two prototype cars, 12-001 and 12-002 are preserved at Chihaya Flower Park in Toshima, Tokyo. Toei 12-000 series The is an electric multiple unit (EMU) train type operated by the Tokyo subway operator Tokyo Metropolitan Bureau of Transportation (Toei) on the Toei