Rebel forces launched an uprising against President Samuel Doe, igniting the First Liberian Civil War. The brutal conflict would last until 1997, displacing millions and drawing international attention to West African instability.
📍 Monrovia, Liberia
The United States observed the first federal Martin Luther King Jr. Day to honor the civil rights leader. It became the first national holiday commemorating an African American and symbolized progress in the U.S. civil rights movement.
📍 United States
A magnitude 7.9 earthquake struck the Tokachi region in Hokkaido, Japan, causing significant damage and tsunamis that affected coastal communities. It prompted upgrades in Japan’s disaster preparedness.
📍 Tokachi, Hokkaido, Japan
The Second Vatican Council, convened by Pope John XXIII, concluded its first session. The council introduced sweeping reforms that modernized Catholic practices and promoted interfaith dialogue worldwide.
📍 Vatican City
Australia and the United States signed the ANZUS treaty (with New Zealand), establishing a formal military alliance in the Pacific. It became a cornerstone of regional security during the Cold War and beyond.
📍 Canberra, Australia
The Red Army liberated Warsaw from Nazi Germany during the Vistula–Oder Offensive. While it ended German occupation, it also paved the way for Soviet domination over postwar Poland.
📍 Warsaw, Poland
Soviet forces broke through the German blockade of Leningrad after nearly 900 days of siege, initiating the restoration of supply lines and turning the tide on the Eastern Front in World War II.
📍 Leningrad, Soviet Union (now St. Petersburg, Russia)
The Treaty of Versailles officially went into effect, establishing the League of Nations and formally ending World War I. Its harsh terms imposed on Germany would later contribute to the rise of World War II.
📍 Versailles, France
During World War I, British submarines sank the German light cruiser SMS Hela off the coast of the Netherlands. It marked an early use of submarine warfare, which would escalate in the years to come.
📍 North Sea, Netherlands coast
Norway reaffirmed its neutrality in World War I to avoid entanglement in the conflict engulfing Europe. Though neutral, the country would still suffer from naval blockades and shipping losses.
📍 Oslo, Norway
Scientists demonstrated the first successful use of krypton gas in electric lighting. This advancement contributed to the development of energy-efficient and long-lasting light bulbs in the 20th century.
📍 London, United Kingdom
The Metropolitan Opera in New York began its first-ever public radio broadcasts, significantly expanding the reach of classical music and opera into American homes during the early 20th century.
📍 New York City, United States
The first public demonstration of an X-ray machine in the United States was held in New York City, just weeks after Wilhelm Röntgen's discovery. It revolutionized diagnostic medicine and led to modern radiology.
📍 New York City, United States
King Wilhelm I of Prussia was proclaimed German Emperor in the Hall of Mirrors at the Palace of Versailles, formally uniting Germany into a single nation-state. This event significantly reshaped European geopolitics.
📍 Versailles, France
The U.S. Senate ratified the Jay Treaty, aimed at resolving lingering issues with Britain after the American Revolutionary War. Though controversial, it averted war and facilitated ten years of peaceful trade.
📍 Washington, D.C., United States
British explorer Captain James Cook became the first European to discover the Hawaiian Islands, which he named the 'Sandwich Islands'. This marked the beginning of Western influence in the Pacific region.
📍 Hawaii, United States
The synthetic pigment Prussian Blue was first documented in Berlin. It became one of the most important and widely used pigments in art and industry, influencing everything from painting to cyanotype photography.
📍 Berlin, Germany
Benjamin Franklin, a founding father of the United States, was born in Boston. He would become a polymath—statesman, scientist, inventor, and diplomat—whose contributions helped shape modern America.
📍 Boston, Massachusetts, British America
Dutch navigator Willem Janszoon made landfall on the Australian coast, becoming the first recorded European to sight the continent. This encounter marked the beginning of European exploration in Oceania.
📍 Cape York Peninsula, Australia
Dutch explorer Willem Barents charted and named the Arctic island of Spitsbergen, now part of the Svalbard archipelago. His discovery expanded European navigation and knowledge of polar regions.
📍 Spitsbergen, Svalbard, Norway