The Battle of Lexington and Concord, which took place on April 19, 1775, is widely considered to be the start of the American Revolutionary War.

The French Revolution began in 1789 with the Storming of the Bastille on July 14, 1789.

The Battle of Waterloo, which took place on June 18, 1815, resulted in the defeat of Napoleon Bonaparte and the end of the Napoleonic Wars.

The American Civil War began on April 12, 1861, with the Confederate attack on Fort Sumter in South Carolina.

The Armistice of 11 November 1918, also known as the Armistice of Compiègne, marked the end of World War I.

World War II began on September 1, 1939, with the German invasion of Poland.

Victory in Europe Day, also known as V-E Day, on May 8, 1945, marked the end of World War II in Europe.

The Cold War is generally considered to have begun in 1947 with the Truman Doctrine and the Marshall Plan.

The Fall of the Berlin Wall on November 9, 1989, is widely seen as the symbolic end of the Cold War.

The first manned moon landing took place on July 20, 1969, with Neil Armstrong and Buzz Aldrin becoming the first humans to walk on the moon.

The invention of the transistor in 1947 is often seen as the beginning of the Information Age.

The first iPhone was launched on June 29, 2007, by Apple Inc.

The COVID-19 pandemic is generally considered to have begun in December 2019 with the first reported cases in Wuhan, China.

The first COVID-19 vaccine, developed by Pfizer and BioNTech, received approval for use in December 2020.

The Russian invasion of Ukraine began on February 24, 2022, with a large-scale military operation launched by Russia against Ukraine.