Which U.S. state is known for its historic battlefields, including Gettysburg?

Pennsylvania is renowned for its historic battlefields, with Gettysburg being one of the most significant locations from the American Civil War. The Battle of Gettysburg, fought in July 1863, was a turning point in the war, marking a major Union victory against the Confederate Army. The battlefield is now preserved as Gettysburg National Military Park, which attracts numerous visitors interested in American history and Civil War heritage.

While Virginia is also known for many Civil War battlefields, such as Fredericksburg and Manassas, Gettysburg specifically took place in Pennsylvania. Maryland has notable battles as well, but Gettysburg remains most closely associated with Pennsylvania, reinforcing the state's prominence in American military history. New Jersey, while it has its own historical significance, does not have a battlefield of the same renown as Gettysburg. Therefore, Pennsylvania stands out as the correct answer in this context.