Which of the following is true of commercial radio? it heightened regional differences. the industry was monopolized by kdka for over five years. it was originally regulated by the federal government. it stimulated consumer culture and fueled fads.

congress also has implied powers, which derive from the necessary and proper clause of the constitution and permit congress "to make all laws which shall be necessary and proper for carrying into execution the foregoing powers, and all other powers vested by this constitution in the government of the united states.