On This Day in History
November 20
Monaco Joins United Nations
The Principality of Monaco was officially admitted as a member state of the United Nations, reinforcing its sovereign status in international affairs.
Microsoft Windows 1.0 Released
Microsoft released Windows 1.0, its first graphical operating system environment, beginning the evolution of personal computing as a mainstream technology.
Francisco Franco Dies, Ending Dictatorship in Spain
Spanish dictator Francisco Franco died, leading to the gradual transition to democracy and the end of authoritarian rule in Spain.
UN Adopts Universal Declaration of the Rights of the Child
The United Nations adopted the Declaration of the Rights of the Child, establishing fundamental rights and protections for children worldwide.
Bo Diddley Makes His National TV Debut
Bo Diddley made his national television debut on 'The Ed Sullivan Show,' helping to popularize rock and roll music across the United States and later the world.
Velcro Patented in Switzerland
Swiss engineer George de Mestral received the patent for Velcro, a revolutionary fastening system inspired by nature, later used in various industries including aerospace and fashion.
Jomo Kenyatta Jailed for Role in Mau Mau Uprising
Jomo Kenyatta, future first President of Kenya, was sentenced to prison for allegedly leading the Mau Mau uprising against British colonial rule, a critical step toward Kenyan independence.
First Meeting of the United Nations General Assembly Legal Committee
The UN General Assembly's Sixth Committee (Legal) convened for the first time, focusing on international law issues and shaping global legal frameworks.
Nuremberg Trials Begin
The Nuremberg Trials began, bringing leading Nazi officials to justice for war crimes and crimes against humanity, setting a precedent for international law.
UNESCO Founded
The United Nations Educational, Scientific and Cultural Organization (UNESCO) was officially established, aiming to promote peace and security through international collaboration in education, science, and culture.
First Football World Cup Qualifying Match Played
The first FIFA World Cup qualifying match took place between Sweden and Estonia, setting the format for international competition in global football.
Dublin's General Post Office Reopens After Easter Rising Damage
The General Post Office in Dublin, heavily damaged during the 1916 Easter Rising, reopened as a symbol of Irish nationalism and resilience.
First Municipal Airport in Canada Opens
St. Hubert Airport opened near Montreal, becoming Canada's first municipal airport and a critical hub for early aviation in North America.
Edwin Hubble Proposes That Andromeda is a Separate Galaxy
Edwin Hubble presented evidence that the Andromeda Nebula is actually a separate galaxy beyond the Milky Way, forever expanding humanity’s understanding of the universe.
First Assembly of the League of Nations Concludes
The first session of the League of Nations Assembly concluded, marking a historic attempt at global governance and collective security after World War I.
Wilhelm II of Germany Abdicates
Kaiser Wilhelm II formally abdicated the throne of Germany, leading to the end of the German Empire and the establishment of the Weimar Republic after World War I.
Mexico Revolution Day Celebrated
The Mexican Revolution officially began, aiming to overthrow long-time dictator Porfirio Díaz, leading to major social and political transformations in Mexico.
Revolutionary Francisco I. Madero Arrested in Mexico
Mexican revolutionary Francisco I. Madero was arrested, an event that galvanized resistance and helped trigger the Mexican Revolution against the Porfirio Díaz regime.
California Admits Women to Practice Law
Clara Shortridge Foltz became the first woman admitted to practice law in California, paving the way for greater gender equality in the legal profession.
Signing of the Treaty of Amity and Economic Relations Between the US and Thailand
The United States and Thailand (then Siam) signed the Treaty of Amity and Economic Relations, marking the first formal diplomatic agreement between the US and an Asian country.