Which US state was hit by a deadly Amtrak train derailment in May of 2015?

In May of 2015, a deadly Amtrak train derailment occurred in the United States, killing 8 people and injuring more than 200 others. The accident took place in Philadelphia, Pennsylvania, making it the state that was hit by the tragedy.

The train, Amtrak Northeast Regional Train 188, was traveling from Washington, D.C. to New York City when it derailed in the Port Richmond neighborhood of Philadelphia. The cause of the accident was determined to be excessive speed on a curve in the tracks.

The incident resulted in increased scrutiny of Amtrak's safety protocols and infrastructure. It also led to the installation of new safety measures, including an automatic train control system that can prevent excessive speed on curves and a system that alerts engineers if a train is going too fast.