Government
Type: Federal republic.
Independence: October 1, 1960.
Constitution: The 1999 constitution (based largely on the 1979 constitution) was promulgated by decree on May 5, 1999 and came into force on May 29, 1999.
Subdivisions: 36 states plus Federal Capital Territory (Abuja); states divided into a total of 774 local government areas.
Total government expenditure (2006 budget): $14 billion.
Defense: 4.5% of 2006 budget.