Cecil Calvert, 2nd Baron Baltimore, 1st Proprietor of the Maryland colony
1732 map of Maryland
The bombardment of Fort McHenry in Baltimore inspired the song, "Star Spangled Banner".
The Battle of Antietam was the single bloodiest day of the Civil War with nearly 23,000 casualties.
Ruin left by the Great Baltimore Fire
Physical regions of Maryland
Western Maryland is known for its heavily forested mountains. A panoramic view of Deep Creek Lake and the surrounding Appalachian Mountains in Garrett County.
Great Falls on the Potomac River
Typical freshwater river above the tidal zone. The Patapsco River includes the famous Thomas Viaduct and is part of the Patapsco Valley State Park. Later, the river forms Baltimore's Inner Harbor as it empties into the Chesapeake Bay.
Typical brackish tidal river. Sunset over a marsh at Cardinal Cove on the Patuxent River
Tidal wetlands of the Chesapeake Bay, the largest estuary in the United States and the largest water feature in Maryland
Black-eyed susans, the state flower, grow throughout much of the state.
Mature Trachycarpus fortunei in Solomons, Maryland
On Maryland's Atlantic coastal islands: A feral Chincoteague Pony on Assateague
Köppen climate types of Maryland, using 1991–2020 climate normals.
Winter in Baltimore, Lancaster Street, Fells Point
Maryland's counties
Maryland population distribution map. Maryland's population is concentrated mostly in the Baltimore and Washington metropolitan areas.
The Baltimore Basilica was the first Catholic cathedral built in the U.S.
The Murugan Temple of North America (Hindu) in Lanham, Maryland
A map showing Maryland's median income by county. Data is sourced from the 2014 ACS 5-year Estimate report published by the US Census Bureau.
Agriculture is an important part of the state's economy
The beach resort town of Ocean City along the Atlantic Ocean is a popular tourist destination in Maryland.
The Chesapeake Bay Bridge connects Maryland's Eastern and Western Shores.
Ellicott City Station, on the original B&O Railroad line, is the oldest remaining passenger station in the United States. The rail line is still used by CSX Transportation for freight trains, and the station is now a museum.
The Maryland State House in Annapolis dates to 1772, and houses the Maryland General Assembly and offices of the governor.
The historical coat of arms of Maryland in 1876
Spiro Agnew, 39th Vice President of the United States, is the highest-ranking political leader from Maryland since the founding of the United States.
Memorial Chapel at the University of Maryland, College Park, Maryland's flagship university
UMBC Commons and Quad
Oriole Park at Camden Yards, home of the Baltimore Orioles
M&T Bank Stadium, home of the Baltimore Ravens

State in the Mid-Atlantic region of the United States.

- Maryland

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Henrietta Maria

Queen of England, Scotland, and Ireland from her marriage to King Charles I on 13 June 1625 until Charles was executed on 30 January 1649.

Portrait by Anthony van Dyck
Henrietta Maria as a princess of France
Henrietta Maria, with her court dwarf, Jeffrey Hudson. A monkey is usually symbolic of an advisor to fools, such as court dwarves, but in this case is believed to represent Henrietta Maria's menagerie of pets; the orange tree represents her love of gardens. Painting by Sir Anthony van Dyck.
Henrietta Maria and King Charles I with Charles, Prince of Wales, and Princess Mary, painted by Anthony van Dyck, 1633. The greyhound symbolises the marital fidelity between Charles and Henrietta Maria.
The Queen's House at Greenwich, completed under Henrietta Maria's sponsorship of Inigo Jones.
Charles handing a laurel wreath to Henrietta Maria, by Daniël Mijtens, c. undefined 1631
Henrietta Maria and Charles before the war, with their son Charles. The couple spent much of the war apart, corresponding by letter. Hendrik Gerritsz Pot, Royal Collection
Merton College chapel, which became Henrietta Maria's private chapel while she was based in Oxford during the Civil War.
Henrietta Maria's court in exile was based at St-Germain-en-Laye, shown here c.1660 in an etching by Israel Silvestre.
Henrietta Maria painted by Sir Peter Lely after the restoration of her son Charles II to the throne.
Coat of Arms of Henrietta Maria of France as Queen consort of England.

The name was carried over into the current U.S. state of Maryland.

Mason–Dixon line

Map of the original Mason–Dixon line
Illustration of Charles Mason and Jeremiah Dixon surveying the line
Mason–Dixon line where the Torrey C. Brown Rail Trail becomes the York County Heritage Trail near New Freedom, Pennsylvania
Historical marker at Front and South Sts., Philadelphia, Pennsylvania, the starting point for the survey
Diagram of the survey lines creating the Mason–Dixon line and "The Wedge"
Province of Maryland, 1632–1776
A "crownstone" boundary monument on the Mason–Dixon line. These markers were originally placed at every 5th mile (5 mi) along the line, ornamented with family coats of arms facing the state that they represented. The coat of arms of Maryland's founding Calvert family is shown. On the other side are the arms of William Penn.
" A Plan of the West Line or Parallel of Latitude" by Charles Mason, 1768
"Mason Dixon Line Trail" 
The Mason Dixon Trail stretches from Pennsylvania to Delaware and is a popular attraction to tourists.

The Mason–Dixon line, also called the Mason and Dixon line or Mason's and Dixon's line, is a demarcation line separating four U.S. states, forming part of the borders of Pennsylvania, Maryland, Delaware, and West Virginia (part of Virginia until 1863).

Border states (American Civil War)

In the context of the American Civil War (1861–65), the border states were slave states that did not secede from the Union.

Historical military map of the border and southern states by Phelps & Watson, 1866
Map of the division of the states during the Civil War. Blue represents Union states, including those admitted during the war; light blue represents border states; red represents Confederate states. Unshaded areas were not states before or during the Civil War.

They were Delaware, Maryland, Kentucky, and Missouri, and after 1863, the new state of West Virginia.

Governor of Maryland

Thomas Johnson, the first Governor of Maryland after independence. He served from 1777 to 1779.
Former Maryland governor and U.S. vice president Spiro T. Agnew

The governor of the State of Maryland is the head of government of Maryland, and is the commander-in-chief of the state's National Guard units.

George Calvert, 1st Baron Baltimore

English politician and colonial administrator.

George Calvert, 1st Lord Baltimore, by John Alfred Vinter
Coat of Arms of George Calvert
Kiplin Hall, estate built by Sir George Calvert, 1st Baron Baltimore (1579–1632) in the 1620s
James I, painted by Daniel Mytens in 1621. James made Calvert the first Baron Baltimore in 1625, in recognition of his services to the Crown.
Sketch of Sir George Calvert, first Baron and Lord Baltimore (1579–1632), c. 1620
George Calvert by Daniël Mijtens
The state flag of Maryland is the banner of Baltimore's coat-of-arms (Calvert, his father's family, in the first and fourth quarters, and Crossland, his mother's family, in the second and third quarters).

Discouraged by its cold and sometimes inhospitable climate and the sufferings of the settlers, he looked for a more suitable spot further south and sought a new royal charter to settle the region, which would become the state of Maryland.

St. Mary's County, Maryland

St. Mary's County Courthouse, July 2009
Amish horse and buggy in Mechanicsville

St. Mary's County, established in 1637, is a county located in the U.S. state of Maryland.

Potomac River

The Potomac River drains the Mid-Atlantic United States, flowing from the Potomac Highlands into Chesapeake Bay.

The Potomac River in Washington, D.C., with Arlington Memorial Bridge in the foreground and Rosslyn, Arlington, Virginia in the background
Map showing the five geological provinces through which the Potomac River flows
The North Branch between Cumberland, Maryland, and Ridgeley, West Virginia, in 2007
Canoers at Hanging Rocks on the South Branch in the 1890s
Confluence of the Potomac and Shenandoah at Harpers Ferry
View southwest across the tidal Potomac River from the south end of Cobb Island Road on Cobb Island, Charles County, Maryland
Captain John Smith's 1608 map
Tundra swans were the predominant species of swan on the Potomac River when the Algonquian tribes dwelled along its shores, and continue to be the most populous variety today.
View of the Potomac River from George Washington's birthplace in Westmoreland County, Virginia
Sunset over the Potomac near Mount Vernon
Map of the Potomac River and its environs circa 1862 by Robert Knox Sneden.
The Potomac River surges over the deck of Chain Bridge during the historic 1936 flood. The bridge was so severely damaged by the raging water, and the debris it carried, that its superstructure had to be re-built; the new bridge was opened to traffic in 1939. (This photograph was taken from a vantage point on Glebe Road in Arlington County, Virginia. The houses on the bluffs in the background are located on the Potomac Palisades of Washington, DC.)
Eutrophication in the Potomac River is evident from this bright green water in Washington, D.C., caused by a dense bloom of cyanobacteria, April 2012
This chart displays the Annual Mean Discharge of the Potomac River measured at Little Falls, Maryland for Water Years 1931–2017 (in cubic feet per second). Source of data: USGS
Map of land use in the watershed
After an absence lasting many decades, the American Shad has recently returned to the Potomac.
Several hundred bottle-nosed dolphins live six months of the year (from mid-April through mid-October) in the Potomac. Depicted here, a mother with her young.
Eastern Box Turtles are frequently spotted along the towpath of the C&O Canal.
Five-lined skink, juvenile
The South Branch near South Branch Depot, West Virginia
Confluence of the Cacapon River (barely visible) with the Potomac
Oblique air photo, facing southwest, of the Potomac River flowing through water gaps in the Blue Ridge Mountains. Virginia on the left, Maryland on the right, West Virginia in upper right, including Harpers Ferry (partially obscured by Maryland Heights of Elk Ridge Mountain) at the confluence of the Potomac and Shenandoah Rivers.
Potomac River at Goose Creek
The Great Falls of the Potomac, viewed from the Virginia bank of the river (Engraving based on an aquatint drawn by George Jacob Beck in 1802)
View of the Potomac River, Analostan Island, Georgetown, and, in the distance, buildings of the nascent City of Washington. (Engraving based on an 1801 watercolor by George Jacob Beck)
Jefferson Memorial in Washington, D.C., viewed from across the Tidal Basin of the Potomac
The Pentagon, looking northeast with the Potomac in the distance
East Branch of the Potomac (now called the Anacostia River) near its confluence with the mainstem Potomac in Washington. (Watercolor drawn in 1839 by Augustus Kollner)
View of the Potomac from Mount Vernon
Potomac River seen while landing at Reagan National Airport
View northeast down the North Branch Potomac River from the Gorman-Gormania Bridge (U.S. Route 50) between Gormania, Grant County, West Virginia and Gorman, Garrett County, Maryland
The North Branch Potomac River near Piedmont, WV
The South Branch Potomac River near South Branch Depot, WV
The South Branch of the Potomac River at Millesons Mill, WV
Potomac River Watershed in West Virginia, Virginia, Pennsylvania, and Maryland

The river forms part of the borders between Maryland and Washington, D.C. on the left descending bank and between West Virginia and Virginia on the right descending bank.

Southern United States

Geographic and cultural region of the United States of America.

Texas Hill Country
Bluegrass region, Kentucky
Glass Mountains, Oklahoma
North Carolina's Appalachian Mountains
Field of yellow wildflowers in Saint Bernard Parish, Louisiana
Pearl River backwater in Mississippi
Misty Bluff along the Buffalo River, Ozark Mountains, Arkansas
Tidal wetlands of the Chesapeake Bay in Maryland
Cherry River in West Virginia
The highlands of Grayson County in Southwest Virginia
1st Maryland Regiment holding the line at the Battle of Guilford Courthouse in North Carolina, 1781
The siege of Yorktown prompted Great Britain's surrender in North America during the American Revolutionary War, 1781
Slaves on a South Carolina plantation (The Old Plantation, circa 1790)
Grove Plantation in Tallahassee, Florida. Known officially as the Call/Collins House at the Grove. Built circa 1840.
Horse race meeting at Jacksonville, Alabama, 1841
Historic Southern United States. The states in light red were considered "border states", and gave varying degrees of support to the Southern cause although they remained in the Union. This illustration depicts the original, trans-Allegheny borders of Virginia, and thus does not show West Virginia (which separated from Virginia in 1863) separately. Although members of the Five Tribes in Indian Territory (today part of Oklahoma) aligned themselves with the Confederacy, the region is not shaded because at the time it was a territory, not a state.
Atlanta's railroad roundhouse in ruins shortly after the end of the Civil War
An African American family, photo-graphed by O'Pierre Havens, circa 1868
A Home on the Mississippi, by Currier and Ives, 1871
Child laborers in Bluffton, South Carolina, 1913
An illustration from Houston: Where Seventeen Railroads Meet the Sea, 1913
Photo of sharecropper family in Walker County, Alabama, circa 1937
Naval Air Station Miami, circa 1942–43
Street musicians in Maynardville, Tennessee, photographed in 1935
Alabama plays Texas in American football for the 2010 BCS National Championship Game
Houston vs Texas face-off during the 2013 Lone Star Series in the American League West division of Major League Baseball
The start of the 2015 Daytona 500, the biggest race in NASCAR, at Daytona International Speedway in Daytona Beach, Florida
A rally against school integration in Little Rock, 1959.
U.S. president Lyndon B. Johnson signs the historic Civil Rights Act of 1964.
Bill Clinton, newly elected Governor of Arkansas speaking with Jimmy Carter in 1978. Carter and Clinton were both Southern Democrats and elected to the presidencies in 1976 and 1992.
Racial segregation was required by state laws in the South and other U.S. states until 1964.
Washington, D.C.
New Orleans
University of Texas at Austin
Virginia Tech
University of Miami
Rice University

Since an influx of Northern transplants in the mid-to-late 20th century, Maryland, Delaware, Northern Virginia, and Washington, D.C. have become more culturally, economically, and politically aligned in certain aspects with that of the Northeast, and are often identified as part of the Mid-Atlantic subregion or Northeast by many residents, businesses, public institutions, and private organizations.

Mid-Atlantic (United States)

Region of the United States generally located in the overlap between the Northeastern and Southeastern States.

Shipping containers at the Port Newark–Elizabeth Marine Terminal, part of the Port of New York and New Jersey.
New York
Washington, D.C.
A USGS fact-sheet interpretation of the Mid-Atlantic in terms of groundwater.<ref>Earl A. Greene et al. "Ground-Water Vulnerability to Nitrate Contamination in the Mid-Atlantic Region". USGS Fact Sheet FS 2004-3067. 2005. Retrieved 25 April 2013. Note: Although the locator map appears to exclude part of northwestern Pennsylvania, other more detailed maps in this article include all of the state.</ref>
An 1897 map displays an inclusive definition of the Mid-Atlantic region.
An 1886 "Harper's School Geography" map showing the region, exclusive of Virginia and West Virginia.
The U.S. Census Bureau Regions and Divisions, displaying an exclusive three-state definition of the Middle Atlantic.

Its exact definition differs upon source, but the region typically includes Delaware, the District of Columbia, Maryland, New Jersey, New York, Pennsylvania, Virginia and West Virginia.


The Twelve-Mile Circle
Map of Delaware
Sunset in Woodbrook, New Castle County, Delaware
The Blackbird Pond on the Blackbird State Forest Meadows Tract in New Castle County, Delaware
A field north of Fox Den Road, along the Lenape Trail in Middle Run Valley Natural Area
Delaware Köppen climate classification is humid subtropical.
Delaware population density map
Picking Peaches in Delaware, from an 1878 issue of Harper's Weekly
Rehoboth Beach is a popular vacation spot during the summer months.
Fort Delaware State Park on Pea Patch Island is a popular spot during the spring and summer. A ferry takes visitors to the fort from nearby Delaware City.
University of Delaware
Delaware's license plate design, introduced in 1959, is the longest-running one in U.S. history.
Delaware Route 1 (DE1) is a partial toll road linking Fenwick Island and Wilmington.
Cape May–Lewes Ferry
Wilmington Station
The Delaware General Assembly meets in the Legislative Hall in Dover.
Joe Biden, the 46th president of the United States and a U.S. senator for Delaware from 1973 to 2009.
NASCAR racing at Dover Motor Speedway

Delaware is a state in the Mid-Atlantic region of the United States, bordering Maryland to its south and west; Pennsylvania to its north; and New Jersey and the Atlantic Ocean to its east.