railroad
The state of Maryland granted the Baltimore and Ohio Railroad (B&O) a charter to build a line from Baltimore to Washington, D.C., in 1831, and the Washington Branch was opened in 1835. This line joined to the original mainline at Relay, Maryland, crossing the Patapsco on the Thomas ViaductIn 1844 the first telegraph line was laid alongside this rail line.American Morse Code was first used on a telegraph line constructed between Baltimore, Maryland, and the old Supreme Court chamber in the Capitol building in Washington, D.C. The first public message "What hath God wrought" was sent on 24 May 1844, by Morse in Washington to Alfred Vail at the Baltimore and Ohio Railroad (B&O) "outer depot" (now the B&O Railroad Museum) in Baltimore
Baltimore and Washington D.C.
Samuel Morse was the father of the telegraph and of Morse code. He built his first line between Washington DC and Baltimore in 1843.
Baltimore and Washington DC
The first U.S. railroad line opened and ran in 1830 in Baltimore, Maryland.
Though there is disagreement about where the first store was opened, the year was 1962. He opened the first Wal-Mart Supercenter in Washington, Missouri
1844
According to the Wikipedia page for the Washington Metro, the Washington DC Metro rail first opened it doors in 1976.
It was founded in 1971, by three friends in Seattle, WA
Washington, MO
The old Yankee Stadium opened on April 18, 1923. The George Washington Bridge opened on October 24, 1931 (upper level only).
He convinced Congress to appropriate money for an outdoor test line between Baltimore, Maryland and Washington, D.C. The first official telegraph message was, "What hath God wrought." The telegraph quickly became more than a toy-the Baltimore test line was used in 1844 to send news of Henry Clay's nomination for president from the National Whig Convention in Baltimore to Washington, D.C.