Which is closest to the united states system: marxist (class view), elitist (power elite), bureaucratic, pluralist, and creedal passion?

Why did leaders such as siddhartha gautama abandon hinduism to createbuddhism around 500 bce:

Which term describes the soviet policy the expanded freedom of the press and allowed criticism of the communist party during the cold wara: containment b: perestroikac: detente d: glasnost

What was true about the progressive movement?