▁speaking ▁about ▁ 2 5 0 ▁different ▁dialect s . ▁ ▁Language ▁groups ▁spoken ▁in ▁the ▁Niger ▁D elta ▁include ▁the ▁I j aw ▁languages ▁and ▁Central ▁D elta ▁languages . ▁E do id ▁languages ▁and ▁Ig bo id ▁languages ▁are ▁also ▁spoken ▁in ▁peri pher al ▁areas . ▁ ▁History ▁ ▁Col onial ▁period ▁The ▁area ▁was ▁the ▁British ▁O il ▁R ivers ▁Prote ctor ate ▁from ▁ 1 8 8 5 ▁until ▁ 1 8 9 3 , ▁when ▁it ▁was ▁expanded ▁and ▁became ▁the ▁Niger ▁Coast ▁Prote ctor ate . ▁The ▁core ▁Niger ▁D elta ▁later ▁became ▁a ▁part ▁of ▁the ▁eastern ▁region ▁of ▁Niger ia , ▁which ▁came ▁into ▁being ▁in ▁ 1 9 5 1 ▁( one ▁of ▁the ▁three ▁regions , ▁and ▁later ▁one ▁of ▁the ▁four ▁regions ). ▁The ▁majority ▁of ▁the ▁people ▁were ▁those ▁from ▁the ▁colonial ▁Cal ab ar ▁and ▁O go ja ▁divisions , ▁the ▁present - day ▁O go ja , ▁Ann ang , ▁I bib io , ▁Or on , ▁E fik , ▁I j aw ▁and ▁Og oni ▁pe op les . ▁The ▁National ▁Council ▁of ▁Niger ia ▁and ▁Cam ero on ▁( N CN C ) ▁was ▁the ▁r uling ▁political ▁party ▁of ▁the ▁region . ▁The ▁N CN C ▁later ▁became ▁the ▁National ▁Convention ▁of ▁Niger ian ▁Cit iz ens , ▁after ▁western ▁Cam ero on ▁decided ▁to ▁separate ▁from ▁Niger ia . ▁The ▁r uling ▁party ▁of ▁eastern ▁Niger ia ▁did ▁not ▁seek ▁to ▁pre clude ▁the