1. On March 29, 1790, the first United States Census was conducted in Pennsylvania. The census counted a population of 373,650 people living in the state at the time.

2. The Erie Canal, which connects the Great Lakes to the Hudson River, was authorized by the New York State Legislature on March 29, 1817. This canal played a significant role in Pennsylvania's economic development by providing a transportation route for goods between the state and New York City.

3. March 29, 1849, marked the founding of the University of Pittsburgh. The university has since become a major research institution and is ranked among the top 25 public universities in the United States.

4. The Pennsylvania Railroad opened its line between New York City and Philadelphia on March 29, 1876. This railway was a significant engineering achievement and helped to establish Pennsylvania's reputation as a transportation hub.

5. On March 29, 1971, the Pennsylvania Lottery held its first drawing. The lottery has since become one of the largest sources of revenue for the state, with proceeds going towards education programs and services for senior citizens.