The Western Region of Nigeria was established as one of three regions united in the Federation of Nigeria as laid out in the Lyttleton constitution adopted in 1954. On 27 May 1967 1967 the region was divided into the Western State (Nigeria) and Lagos State.
Chief Obafemi Awolowo was leader of the Action Group and served as Premier of the Western Region from 1954 to 1959.
The Federation of Nigeria was a predecessor to modern-day Nigeria from 1954 to 1963. It was a British protectorate until its independence on 1 October 1960. The Federation consisted of three regions:
British rule of Colonial Nigeria ended in 1960, when the Nigeria Independence Act 1960 made the federation an independent sovereign state. Elizabeth II remained head of state as the Queen of Nigeria, as well as other dominions and commonwealth realms. Her constitutional roles in Nigeria were exercisable by the Governor-General of Nigeria. Three people held the office of governor-general during the whole existence of the Federation of Nigeria:
The Action Group (AG) was a Nigerian nationalist political party established in Ibadan on 21 March 1951, by Chief Obafemi Awolowo. The party was founded to serve as the platform for realizing his preliminary objective of mobilizing Western Nigerians to forestall the National Council of Nigeria and the Cameroons (NCNC) control of the Western Region and the subsequent aim of cooperating with other nationalist parties to win independence for Nigeria. It benefited immensely from the relationships developed in the Egbe Omo Oduduwa formed in Awolowo's days in London as a student.