| Government type: Capital: Independence: National holiday: Constitution: Legal system: Suffrage: | Republic, Parliamentary Democracy Gaborone 30 September 1966 (from the United Kingdom) Independence Day (Botswana Day), 30 September March 1965; effective 30 September 1966. Text of the Constitution mixed legal system of the Roman-Dutch model and common law as well as customary law18 years of age; universal |