April 18
1025 – BolesÅ‚aw Chrobry is crowned in Gniezno, becoming the first King of Poland. 1506 – The cornerstone of the current St. Peter’s Basilica is laid. 1775 – Paul Revere and William Dawes ride from Charleston to Lexington warning the “regulars are coming!” 1783 – Fighting ceases in the American Revolution, eight years to the...