(mc)what was one of the long-term effects of the great society?

a reduction in the percentage of people in poverty
a reduction in the number of people unemployed
a decline in defense spending
a decrease in the national debt

One of the long term effects of the Great Society was a reduction in the percentage of people in poverty.

Explanation:

The Great Society was a series of domestic programs adopted by President Lyndon B. Johnson in 1964-65. Its declared objectives were to eliminate poverty and racial injustice.

President Johnson used the term "Great Society" for the first time during a speech at Ohio University and then relayed the details of his program at the University of Michigan in 1964. The focus of government spending would be on projects for education, health, urban problems, rural poverty and transportation. The programs went ahead by a Congress dominated by the Democratic Party in the 1960s. Many compared the breadth of the "Great Society" to the New Deal, the program adopted by President Franklin D. Roosevelt three decades earlier.

Some of Johnson's proposals were, in fact, expanded designs of President John F. Kennedy's New Frontier program. To carry his projects forward, Johnson used all his powers of persuasion as a politician and received endorsement from the people when he was elected by an overwhelming majority in 1964.

However, the outbreak of the Vietnam War undermined the popularity of President Johnson and divided the Democratic Party and ended up burying several proposals of the "Great Society". Still, several projects have passed and become a success, such as Medicare, Medicaid and various federal funds for education. Investments in social and welfare areas, guaranteed in the "Great Society," were expanded by presidents Richard Nixon and Gerald Ford.