What was the constant problem of the city during the early 1900s

congestion, pollution crime, and disease

Industrial expansion and population growth radically changed the face of the nation's cities. Noise, traffic jams, slums, air pollution, and sanitation and health problems became commonplace. Mass transit, in the form of trolleys, cable cars, and subways, was built, and skyscrapers began to dominate city skylines.

what are local authorities doing to fix the problem

explanation:

what are local authorities doing to fix the problem

enhanced benefits or fringe benefits are supplementary additions employers offer to employees in addition to their wages. these benefits, both monetary and non-monetary are offered to boost employee morale. benefits