What piece of legislation to expand the middle class? a. the civil rights act b. the federal highway act c. the servicemens readjustment act d. the voting right acts e. the national defense and education act.

The correct answer is A: The civil rights act. It outlawed discrimination based on race, gender, color, religion, etc. This allowed people who had previously been stuck on the fringes of society to become better integrated, find better jobs and just generally be treated more fairly, which allowed for greater social mobility.