Answer:
Both were written to expose the desperate and terrible living conditions of poor people.
Step-by-step explanation:
How the other half lives is a book by Jacob Riis which documents the squalid living conditions in New York City slums in the 1880s. He had his share of experience of poverty which spurred him in making attempts to alleviate the terrible living conditions of poor people. His contributions made Theodore Roosevelt to call him "the most useful citizen in New York City".
The Grapes of Wrath by John Steinbeck is a significant event in the national history. He awakened the nation's comprehension and compassion by exposing the bad living conditions of millions of Americans due to the Dust Bowl and Great Depression.