Maryland

Maryland () is a state in the Mid-Atlantic and Southern regions of the United States. It borders Virginia to its south, West Virginia to its west, Pennsylvania to its north, and Delaware to its east, as well as with the Atlantic Ocean to its east, and the national capital and federal district of Washington, D.C. to the southwest. With a total area of , Maryland is the ninth-smallest state by land area, and its population of 6.1 million ranks it the 19th-most populous state and the fifth-most densely populated. Maryland's capital city is Annapolis, and the state's most populous city is Baltimore.

Maryland's coastline was first explored by Europeans in the 16th century. Prior to that, it was inhabited by several Native American tribes, mostly the Algonquian peoples. One of the original Thirteen Colonies, the Province of Maryland was founded in 1634 by George Calvert, 1st Baron Baltimore, who sought to provide a religious haven for Catholics persecuted in England. Religious strife was common in Maryland's early years, and Catholics remained a minority, albeit in greater numbers than in any other English colony. Its economy was heavily plantation-based and centered mostly on the cultivation of tobacco. Demand for cheap labor from Maryland colonists led to the importation of numerous indentured servants and enslaved Africans. In 1760, Maryland's current boundaries took form following the settlement of a long-running border dispute with Pennsylvania. Although it was a slave state, Maryland remained in the Union during the American Civil War, and its proximity to Washington D.C. and Virginia made it a significant strategic location. After the Civil War ended in 1865, Maryland took part in the Industrial Revolution, driven by its seaports, railroad networks, and mass immigration from Europe.