1. In 1853, the Maryland General Assembly authorized the construction of a suspension bridge across the Potomac River between Virginia and Maryland, which would become known as the American Legion Memorial Bridge.

2. On February 15, 1946, the first meeting of the Inner Harbor Committee was held in Baltimore, marking the official start of efforts to revitalize the historic waterfront district.

3. In 1969, the Maryland House of Delegates approved a bill to establish the Chesapeake Bay Bridge-Tunnel District, paving the way for the construction of the Chesapeake Bay Bridge-Tunnel, a landmark engineering feat that spans 17 miles across the Chesapeake Bay.

4. On February 15, 1973, Maryland's new constitution, which had been ratified by voters in November of the previous year, officially took effect. The new constitution created a modern, more efficient structure of state government.

5. In 2013, the Maryland General Assembly passed a landmark gun control bill known as the Firearms Safety Act of 2013. The bill, which was signed into law by Governor Martin O'Malley on May 16 of that year, enacted new regulations on the sale, possession, and transfer of firearms in Maryland.