1. In 1778, during the Revolutionary War, the Battle of Monmouth took place in New Jersey, with many soldiers from Pennsylvania taking part in the fight.

2. In 1836, William Holmes McGuffey, a teacher and educational reformer from Pennsylvania, published the first edition of his McGuffey Reader, which became one of the most widely used textbooks in American schools for over a century.

3. In 1895, the first automobile race in the United States took place in Chicago, with Pennsylvania resident Charles Duryea coming in first place.

4. In 1952, Pittsburgh Pirates pitcher, Ralph Kiner, became the first player in National League history to hit 3 home runs in a single game twice in one season.

5. In 2018, the Pennsylvania Supreme Court declared the state's Congressional districts to be unconstitutionally gerrymandered, leading to a redraw of the districts before the 2018 mid-term elections.