 After this, Mobile's "de facto" segregation was increasingly replaced with legislated segregation as whites imposed Jim Crow laws to maintain supremacy.In 1911 the city adopted a commission form of government, which had three members elected by at-large voting.Considered to be progressive, as it would reduce the power of ward bosses, this change resulted in the elite white majority strengthening its power, as only the majority could gain election of at-large candidates.