Original sentence: During the Nigerian Civil War, on 27 May 1979, all the former ancient states in the old Calabar Kingdom excluding Fernando Po (now Equatorial Guinea), Western Cameroon, and Igbo speaking territories (parts of Abia and Imo States that used to belong to Calabar Kingdom) became one of the the twelve states of Nigeria, named Southeastern State (also known as Southeastern Nigeria or Coastal Southeastern Nigeria).In modern days, european musical instruments have gained wide-spread use in their music and cultural performances.Their music is unique to their custom and secret socities such as the Ekpe, Ekong, Ekpo, and Ekpriakata and Nbaya
Edited sentence: During the Nigerian Civil War, on 27 May 1979, all the former ancient states in the old Calabar Kingdom excluding Fernando Po (now Equatorial Guinea), Western Cameroon, and Igbo speaking territories (parts of Abia and Imo States that used to belong to Calabar Kingdom) became one of the twelve states of Nigeria, named Southeastern State (also known as Southeastern Nigeria or Coastal Southeastern Nigeria).In modern days, European musical instruments have gained widespread use in their music and cultural performances.Their music is unique to their custom and secret societies such as the Ekpe, Ekong, Ekpo, and Ekpriakata and Nbaya