- 1902 - Treaty of Vereeniging - Ends the Second Anglo-Boer War
- 1919 - Treaty of Versaille - Ends World War 1
- 1931 - Treaty of Westminster - Creates the British Commonwealth
- 1952 - Treaty of Taipei - Peace treaty between Japan and the Republic of China
- 1957 - Treaty of Rome - Establishes the European Economic Community
- 1979 - Moon Treaty - Turns jurisdiction of all heavenly bodies to the international community
- 1997 - Kyoto Protocol - Mandates the reduction of greenhouse gas emissions