Olusegun Obasanjo is a Nigerian politician and military leader who served as:

*Key Positions*

1. *Head of State (1976-1979)*: Led Nigeria\'s military government after Murtala Mohammed\'s assassination.
2. *President (1999-2007)*: Elected Nigeria\'s civilian president, serving two terms.

*Early Life and Education*

1. *Born*: March 5, 1937, in Abeokuta, Ogun State.
2. *Education*: Baptist Boys\' High School, Abeokuta; Royal Military Academy, Sandhurst.

*Military Career*

1. *Commissioned (1959)*: Joined Nigerian Army; trained at Sandhurst.
2. *Civil War (1967-1970)*: Fought on the federal side.
3. *Head of State (1976-1979)*: Oversaw transition to civilian rule.

*Presidential Term (1999-2007)*

1. *Economic reforms*: Implemented policies to stabilize Nigeria\'s economy.
2. *Debt relief*: Negotiated debt forgiveness with international creditors.
3. *Anti-corruption efforts*: Established the Economic and Financial Crimes Commission (EFCC).
4. *Foreign policy*: Strengthened ties with African nations and global powers.

*Legacy*

1. *Democratization*: Transitioned Nigeria from military to civilian rule.
2. *Economic growth*: Encouraged foreign investment and economic development.
3. *Regional leadership*: Played key roles in African Union and ECOWAS.

*Criticisms and Controversies*

1. *Third-term controversy*: Attempted to extend presidential term limits.
2. *Electoral disputes*: Faced criticism over election irregularities.
3. *Human rights concerns*: Accused of suppressing opposition.

*Post-Presidency*

1. *African Union envoy*: Mediated conflicts in African nations.
2. *International diplomacy*: Participated in global forums.
3. *Autobiographies*: Published \"My Command\" (1980) and \"Not My Will\" (1990).

*Awards and Honors*

1. *Nigeria\'s highest honors*: Grand Commander of the Order of the Federal Republic (GCFR).
2. *International recognition*: Honorary doctorates from universities worldwide.

Olusegun Obasanjo\'s complex legacy reflects both accomplishments and challenges in Nigeria\'s development.