Jacob riis wrote an important book, that brought attention to the problems in american cities. his book was called "how the other lives."

the answer is: How the other HALF Lives

"How the other half Lives" Highlight the life of poor people that exist in the early industrialization era. Due to large number of migrations to the cities, many of them unable to compete to found the jobs in factories. These people were forced to live in a slum (one room could be resided with more than 10 families) and that places have very poor sanitary.

can you show the map

answer; (cognitive   dissonance);