An economic impact of the agricultural industry resulting from the close of the frontier — ended cotton farming as a cash crop.

forced the railroad industry to shut down.

made cotton farming an ideal cash crop.

caused many farmers to declare bankruptcy.

in an absolute  monarchy, the  monarchrules as an autocrat, with absolutepower  over the state and government — for example, the right to rule by decree, promulgate laws, and impose punishments. the  monarch isnominally sovereign but the electorate, through their legislature, exercise political sovereignty.

protectionism fosters competition and keeps price regulated is not an argument in favor of protectionism.

answer; they are called (pebbling);