1. On March 27, 1775, the Continental Congress passed a resolution that ordered the raising and outfitting of two battalions of Marines. This resolution established the United States Marine Corps as a permanent military force.

2. In 1855, the first train arrived in the newly established city of Altoona, Pennsylvania. The arrival of the train marked a significant milestone in the city's growth, as it facilitated transportation and commerce throughout the region.

3. On March 27, 1919, the Treaty of Versailles was signed, officially ending World War I. Pennsylvania played a significant role in the war effort, with the state mobilizing over 300,000 troops and contributing to the Allied victory.

4. In 1979, the Three Mile Island nuclear power plant in Harrisburg, Pennsylvania experienced a partial meltdown. The incident was the most significant nuclear accident in American history and led to increased regulations and safety measures in the industry.

5. On March 27, 2016, Villanova University, located in the Main Line suburb of Philadelphia, won the NCAA Men's Basketball Championship. The championship was the second in the school's history and celebrated by fans throughout the state.