What is the histroical context behind manifest destiny

Aging populations can be a problem for developed countries because a) there are fewer younger workers coming into the workforce. b) most older workers demand top-level pay and full benefits. c) many older people are skilled in manufacturing, not technology. d) younger workers cannot find jobs when older people work longer.

Why did the 24th amendment and the civil rights act succeed when other legislation had failed?

Which groups united to form the populist party