Sanitizing things can get rid of dangerous bacteria, and it can decrease the likelihood of people getting sick.
None of the other answers deal with health. City planning was meant to increase the amount of housing available, Education was introduced to make the population more educated and informed, and they made cities more beautiful to encourage people to move to the city.
KAY GALLANT: Most Americans approved strongly of the economic growth and improved living conditions during the nineteen twenties. They supported the conservative Republican policies of President Calvin Coolidge. And they had great faith in the country's business leaders and economic system.
HARRY MONROE: The spirit of protest was especially strong in serious American writing during the nineteen twenties. Many of the greatest writers of this period hated the new business culture.
BOB DOUGHTY: Welcome to THE MAKING OF A NATION – American history in VOA Special English.
