LUXEMBOURG - HISTORY
After 400 years of domination by various European nations, Luxembourg was granted the status of Grand Duchy by the Congress of Vienna on 9. June 1815. Although Luxembourg considers 1835 (Treaty of London) to be its year of independence, it was not granted political autonomy until 1839 under King William I of the Netherlands, who also was the Grand Duke of Luxembourg. In 1867, Luxembourg was recognized as independent and guaranteed perpetual neutrality.