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Early in law, in the Roman Empire and in the cities of Greek states.
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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).
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The first philosophical thoughts mixed with the legal thoughts with the works of Kant and Vattel.
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Creates regular diplomatic meetings and establishes international organizations like river commissions. -
First permanent International organization are founded
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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.
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It is an international agreement signed in 1928 that renounced war as a means of solving international disputes. -
These new conventions serve to strengthen the protection of the sick and wounded of the armed forces in the field, the protection of the sick and wounded and shipwrecked in the armed forces at sea, the treatment of prisoners of war and the protection of civilian populations.
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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.
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In 1947,the General Assembly established the International Law Commission, charged with the progressive development and codification of international law.