Height brings benefits to the tall, so we expect good things for the dutch, who are now the tallest in the world. what is part of the reason why the united states lags behind in average height, despite the nation's general prosperity?

The correct answer is the psychological stress induced by inequality leads to an increase in stress responses and related social behaviors

The United States are very segmented and there are a lot of different parts society. There is high inequality between these parts of the society and this creates a huge amount of stress for all segments. The social behaviors thus also become negative.