1. In 1681, King Charles II granted a charter to William Penn for land in America, which would later become the state of Pennsylvania. This charter marked the beginning of Penn's "holy experiment" of religious freedom and tolerance in the colony.

2. In 1783, the Continental Congress ratified the Treaty of Paris, which officially ended the Revolutionary War and recognized the independence of the United States. Pennsylvania played a significant role in the war effort and was also the site of the signing of the Declaration of Independence.

3. In 1820, the Pennsylvania Horticultural Society was founded in Philadelphia, with the goal of promoting gardening and horticulture in the state. Today, the society continues to support the preservation and enhancement of green spaces in urban areas.

4. In 1861, Pennsylvania Governor Andrew Curtin called for 25,000 volunteers to join the Union Army in response to the outbreak of the Civil War. Pennsylvania would go on to send the second-highest number of troops to the war effort, behind only New York.

5. In 1938, the first NFL draft was held in Philadelphia. The draft, which has become an annual event and a major part of NFL culture, allows teams to select eligible college football players for their rosters. Pennsylvania has been home to several NFL teams, including the Pittsburgh Steelers and Philadelphia Eagles.