Independence:
1839 (from the Netherlands)
National holiday:
National Day (Birthday of Grand Duchess Charlotte) 23 June; note - the actual date of birth was 23 January 1896, but the festivities were shifted by five months to allow observance during a more favorable time of year
Constitution:
17 October 1868; occasional revisions
Legal system:
based on civil law system; accepts compulsory ICJ jurisdiction
Suffrage:
18 years of age; universal and compulsory