Urban political machines stayed in power because the federal government supported them with grants they understood how to use the political system for their own good they performed social services for african americans there was little regard for the political system they took over services from the cities

Which factor best suggests a cause for the urban problems shown in this table? (3 points) increasing discriminatory housing practices shifting population density gradients over time declining urban renewal efforts by city governments declining basic employment sector in industrial cities increasing gentrification efforts in the inner cities