Which sentence best summarizes the central idea of the song, "Brother, Can You Spare a Dime?" The United States was built, developed, and protected by women and men of various cultures and backgrounds. The men begging for money on the street helped build and protect our country, and they deserve a better lot than they have been given. Farms, railroads, and the military have greatly diminished in quality since the onset of the Great Depression. A man named Al is responsible for the building, development, and protection of the United States of America.