Nigeria

01 Jul 1849               Bight of Biafra a British protectorate

01 Feb 1852               Bight of Benin a British protectorate

01 Jan 1900               British Nigerian colonies

01 Jan 1914               Colony and Protectorate of Nigeria

01 Oct 1954 - 30 Sep 1960 Federation of Nigeria (autonomous

01 Oct 1960               Independence, Dominion of Nigeria

01 Oct 1963 - 24 May 1966 Federal Republic of Nigeria

24 May 1966               Republic of Nigeria

31 Aug 1966 -             Federal Republic of Nigeria

30 May 1967 - 12 Jan 1970 Secession of Biafra (not recognised)

Governors-general and Commanders-in-chief

01 Jan 1914 - 08 Aug 1919 Sir Frederick John Dealtry .................. 1858-1945

08 Aug 1919 - 13 Nov 1925 Sir Hugh Charles Clifford ................... 1866-1941

13 Nov 1925 - 17 Jun 1931 Sir Graeme Thomson .......................... 1875-1933

17 Jun 1931 - 01 Nov 1935 Sir Donald Charles Cameron .................. 1872-1948

01 Nov 1935 - 1943        Sir Bernard Henry Bourdillon ................ 1883-1948

18 May 1943 - 14 Oct 1947 Sir Arthur Frederick Richards ............... 1885-1978

14 Oct 1947 - 15 Apr 1948 George Beresford-Stooke ..................... 1897-1983

                          (acting)

15 Apr 1948 - 15 Jun 1955 Sir John Stuart Macpherson .................. 1898-1971

15 Jun 1955 - 15 Nov 1960 Sir James Wilson Robertson .................. 1899-1983

Governor-general

15 Nov 1960 - 01 Oct 1963 Benjamin Nnamdi Azikiwe ..................... 1904-1996

President

01 Oct 1963 - 16 Jan 1966 Benjamin Nnamdi Azikiwe ..................... s.a

Heads of the Military Government

16 Jan      - 29 Jul 1966 Johnson Thomas Umurakwe Aguiyi Ironsi ....... 1924-1966 Mil

29 Jul 1966 - 29 Jul 1975 Yakubu Dan-Yumma Gowon ...................... 1934-     Mil

29 Jul 1975 - 13 Feb 1976 Murtala Ramat Mohammad ...................... 1938-1976 Mil

13 Feb 1976 - 30 Sep 1979 Olusegun Aremu Okikiola Obasanjo ............ 1947-     Mil

President

01 Oct 1979 - 31 Dec 1983 Alhaji Shehu Usman Aliyu Shagari ............ 1925-2018

Chairmen of the Supreme Military Council

31 Dec 1983 - 27 Aug 1985 Mohammadu Buhari ............................ 1942-     Mil

27 Aug 1985 - 26 Aug 1993 Ibrahim Badamsi Babangida ................... 1941-     Mil

Interim President

26 Aug      - 17 Nov 1993 Ernest Adegunle Oladeinde Shonekan .......... 1936-2022

Chairmen of the Provisional Ruling Council

17 Nov 1993 - 08 Jun 1998 Ogagun Sani Abacha .......................... 1943-1998 Mil

08 Jun 1998 - 29 May 1999 Abdulsalami Alhaji Abubakar ................. 1942-     Mil

Presidents

29 May 1999 - 29 May 2007 Olusegun Aremu Okikiola Obasanjo ............ 1947-

29 May 2007 - 05 May 2010 Umaru Musa Yar'Adua ......................... 1951-2010

05 May 2010 - 29 May 2015 Goodluck Ebele Azikiwe Johnathan ............ 1957-

29 May 2015 - 29 May 2023 Mohammadu Buhari ............................ s.a

29 May 2023 -             Bola Ahmed Adekunle Tinubu .................. 1952-

Prime Ministers

30 Aug 1952 - 30 Sep 1954 Benjamin Nnamdi Azikiwe ..................... s.a

30 Aug 1957 - 16 Jan 1966 Abubakar Tafawa Balewa ...................... 1912-1966

16 Jan      - 17 Jan 1966 Zanna Bukar Dipcharima ...................... 1917-1969

04 Jan      - 26 Aug 1993 Ernest Adegunle Oladeinda Shonekan .......... s.a

Biafra

30 May 1967               Independence proclaimed

12 Jan 1970               Reintegrated into Nigeria

Heads of State

30 May 1967 - 08 Jan 1970 Chukwuemeka Odumegwu Ojukwu ................ 1933-2011

08 Jan      - 12 Jan 1970 Philip Effiong ............................. 1925-2003