Old line state is a term used to describe the state of Maryland in the United States. However, there are several synonyms that can be used to refer to Maryland, depending on the context or perspective. For instance, some people refer to it as the Free State because of its historical stance on issues such as slavery and secession. Others call it the Chesapeake Bay State because of its location along the Bay and the significance of the Bay to Maryland's economy and tourism. Other synonyms for Maryland include The Old Dominion, which is also used to describe Virginia, the Monumental State, and America in Miniature, among others.