This Day in History: April 18

1025 Bolesław Chrobry is crowned in Gniezno, becoming the first King of Poland

Bolesław Chrobry was the first ruler of the Piast dynasty to receive the title of "king" from the Pope. His coronation marked a significant moment in the establishment of Poland as a sovereign state.

1506 The cornerstone of the current St. Peter's Basilica is laid in the Vatican by Pope Julius II

Construction of the current St. Peter's Basilica began in 1506 and was completed over the course of more than a century. The basilica is considered one of the most important Catholic sites in the world.

1775 Paul Revere and William Dawes ride from Charlestown to Lexington warning the "regulars are coming!"

This historic midnight ride by Paul Revere and William Dawes warned American colonial militias of the impending arrival of British troops, enabling them to prepare for the first battles of the American Revolutionary War.

1783 American Revolution: George Washington issues General Order announcing the end of hostilities with Britain, giving thanks to the Almighty, and offering congratulations and authorizing an extra ration of alcohol to the troops to celebrate

After eight years of war, George Washington issued a General Order to announce the end of hostilities with Britain. This event marked the beginning of a new era for the United States as an independent nation.

1906 A massive earthquake destroys San Francisco

In one of the most devastating natural disasters in American history, the earthquake and resulting fires destroyed over 80% of San Francisco, killing nearly 3,000 people.

1949 Ireland becomes an independent republic

Following a long struggle for independence, Ireland officially became a republic on this day. However, six counties in the northern part of the island remained in the Commonwealth, leading to a decades-long ethno-nationalist conflict known as The Troubles.

1951 The European Coal and Steel Community, a precursor of the European Union, is established

Six European countries - France, West Germany, Italy, Belgium, Luxembourg, and the Netherlands - signed the Treaty of Paris to establish the European Coal and Steel Community. This was a significant step towards greater economic and political integration in Europe.

1954 Egyptian Colonel Gamal Abdel Nasser seizes power and appoints himself Prime Minister

Gamal Abdel Nasser was a key figure in the political landscape of the Middle East during the 1950s and 60s. His rise to power in Egypt marked a turning point in the country's history, leading to significant changes in government and society.

1956 Rainier III marries Grace Kelly

The wedding of Prince Rainier III of Monaco and American actress Grace Kelly was a highly publicized event, capturing the attention of people around the world. The marriage of royalty and Hollywood glamour helped to boost the image of Monaco as a glamorous and desirable destination.