-
First practices of law with treaties, envoys and sacred agreements in Greece and the Roman Empire
-
Hugo Grotius publishes "De Jure Belli ac Pacis", organising international law, he is considered the "father of international law."
-
The Treaties of Westphalia, signed in 1648, put an end to the Thirty Years' War and the Eighty Years' War in Europe, they established the sovereignty of States as the basis of international law.
-
Expansion: regulation of seas, diplomacy, multilateral conventions (Congress of Vienna 1815, International Telegraph Union 1865, Universal Postal Union 1874).
-
The creation of the League of Nations, after the WWI, it is the first international organization, which failed but which is a fundamental for the future
-
Foundation of the Permanent Court of International Justice.
-
Foundation of the United Nations, a universal organization membership, focus on peace and security, human rights, and development of international law. To avoid another World War.
-
Expansion into human rights, international criminal law, environmental law, economic law, with institutions like the International Court of Justice, International Criminal Court, and specialized UN agencies.