Question: How many acres is the district in Selma where  the most popular style of house in the Southern United States from the end of the American Civil War (1861–65) through the 1920s be found?
Sentence (from "Shotgun house"): A "shotgun house" is a narrow rectangular domestic residence, usually no more than about 12 feet (3.5 m) wide, with rooms arranged one behind the other and doors at each end of the house.
Relevant evidence: Yes