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 "Old Town Historic District (Selma, Alabama)"): It is bounded by U.S. Route 80, Broad and Franklin streets, and Dallas and Selma avenues.
Relevant evidence: No