Final answer:
Michael Harrington's book 'The Other America' inspired President Johnson to declare a war on poverty, resulting in the Economic Opportunity Act and the creation of programs like VISTA, the Job Corps, and Project Head Start.
Step-by-step explanation:
Michael Harrington's book The Other America influenced President Lyndon B. Johnson to declare war on poverty. This declaration led to the creation of several programs under Johnson’s domestic policy initiative known as the Great Society. The Economic Opportunity Act (EOA) was enacted, allocating nearly $1 billion for antipoverty measures such as small business loans, youth programs, and job training. It also led to the establishment of initiatives like the Volunteers in Service to America (VISTA), the Job Corps, and Project Head Start, targeted at preschool students from underprivileged backgrounds.