China
Canada
Denmark
Belarus.
Canada touches America's northern border. It is the longest international border in the world, stretching over 5,500 miles from the Atlantic Ocean in the east to the Pacific Ocean in the west.
New York touches the northern border of Pennsylvania.
Idaho does
border
utah
Germany and Belgium
The state that touches the northern border of Pennsylvania is New York. It shares a long border with Pennsylvania, extending from the western part of the state to the northeastern region. This border includes various geographic features, including rivers and forests.
Denmark is located on the northern border of Germany.
Switzerland.