History of Baltimore

20th century

On February 7, 1904, the Great Baltimore Fire destroyed over 1,500 buildings in 30 hours, leaving more than 70 blocks of the downtown area burned to the ground. Damages were estimated at $150 million—in 1904 dollars. As the city rebuilt during the next two years, lessons learned from the fire led to improvements in firefighting equipment standards.

The city grew in area by annexing new suburbs from the surrounding counties, the last being in 1918, when the city acquired portions of Baltimore County and Anne Arundel County. A state constitutional amendment, approved in 1948, required a special vote of the citizens in any proposed annexation area, effectively preventing any future expansion of the city's boundaries.

The relative size of the city's black population grew from 23.8% in 1950 to 46.4% in 1970. The Baltimore riot of 1968 occurred following the assassination of Martin Luther King, Jr. in Memphis, Tennessee, on April 4, 1968. Coinciding with riots in other cities, public order was not restored until April 12, 1968. The Baltimore riot cost the city of Baltimore an estimated $10 million (US$ 67 million in 2014). A total of 11,000 Maryland National Guard and federal troops were ordered into the city.

Lasting effects of the riot can be seen on the streets of North Avenue, Howard Street, Gay Street, and Pennsylvania Avenue, where long stretches of the streets remain barren. The city experienced tumult again