Which items were brought to the U. S. and developed by enslaved Africans?

Who tried to stop the civil rights act of 1964 from passing the us senate and what tactic did they use? how was their opposition overcome?

Look at the map of cities in the united states at the turn of the twentish century what impact did railroads have on cities across the united states at the turn of the twentish century

What is significant about the power that russian federal cities are granted?