Pennsylvania
New York ,Delaware, Pennsylvania
The bordering states of Delaware are Maryland, New Jersey and Pennsylvania.
The bordering states of West Virginia are Kentucky, Ohio, Pennsylvania, Maryland, and Virginia.
the states that border Maryland are Pennsylvania Delaware Virginia & west Virginia at least plus the united states of America if you consider it a state whether in the district of Columbia or the territorial seas
The confederate states that bordered the union states varied by time, as some states changed sides or became neutral. Virginia was the only one that stayed the same, bordering Ohio, Pennsylvania and Maryland.
Maryland is in the Mid Atlantic Region and borders Virginia, West Virginia, Pennsylvania, Delaware and the District of Columbia.
montana
......Hawaii is an island. There are no states bordering it. Just water.
Should this question be referring to the United States before slavery was abolished in 1865, here are a few slave holding States that bordered on States were slavery was illegal: Slave State Maryland: borders with non slave States of: Pennsylvania and West Virginia; Slave State of Delaware bordering non slave States of New Jersey and Pennsylvania. This is only a short list of slave States bordering non slave States at the time of the US Civil War.
Bordering PA, giving their postal code abbreviations only, are NJ, DE, MD, WV, OH, and NY.
Indiana, New York, Ohio, & Pennsylvania