Oil Rivers Protectorate established in the Niger DeltaJan 1, 1884Labels: Oil Rivers, Niger DeltaBritannicaWiki NigerCoast
Berlin Conference accelerates European partition of AfricaNov 15, 1884Labels: Berlin ConferenceBritannica
Royal Niger Company charter revoked; Britain assumes controlJan 1, 1900Labels: Royal Niger, British governmentBritannica NigeriaHansard 1899
Northern and Southern Nigeria protectorates organizedJan 1, 1900Labels: Northern Nigeria, Southern NigeriaBritannica
Lagos and Southern Nigeria merged administrativelyMay 1, 1906Labels: Lagos Colony, Southern NigeriaNigeria HCWiki SouthNig
Amalgamation forms the Colony and Protectorate of NigeriaJan 1, 1914Labels: Colony and, Amalgamation 1914BritannicaNigeria HC
Clifford Constitution creates Legislative Council frameworkNov 21, 1922Labels: Clifford Constitution, Legislative CouncilClifford PDF
Richards Constitution takes effect, strengthening regionalismJan 1, 1947Labels: Richards ConstitutionHansard 1953SabiLaw
Macpherson Constitution expands representation after consultationsJun 29, 1951Labels: Macpherson ConstitutionHansard 1953vLex 1951
Lyttleton Constitution establishes Federation of NigeriaOct 1, 1954Labels: Lyttleton Constitution, Federation ofHansard 1955Britannica
1959 federal election shapes independence coalition governmentDec 12, 1959Labels: 1959 Federal, Abubakar TafawaWiki 1959Britannica
Nigeria Independence Act receives Royal Assent in the UKJul 29, 1960Labels: Nigeria Independence, UK ParliamentHansard 1960Archontology
Nigeria becomes independent with a new federal constitutionOct 1, 1960Labels: Independent Nigeria, Federal ConstitutionBritannicaArchontology