The mid-twentieth century saw a significant increase in homeownership among both African Americans and whites in metropolitan areas across the United States. Overwhelmingly, whites moved to the suburbs while African Americans bought houses in central cities. In “A Silver Lining to White Flight? White Suburbanization and African–American Homeownership, 1940–1980,” a 2013 Journal of Urban Economics paper, authors Leah P. Boustan and Robert A. Margo argue the provocative hypothesis that white suburbanization was a leading cause of rising black homeownership in the mid-twentieth century. They estimate that, between 1940 and 1980, one black household became a homeowner for every 10 white households that left the central city.