Wikipedia refers to marginal value as, the change in economic value associated with a unit change in output, consumption, or some other economic choice variable. Marginal value can also be defined as the additional value added from the next consumed unit. For example, giving a slice of bread to someone without any would be of great value to them. However, the next slice would not have as much value.
A citizen is a participatory member of a political community. Citizenship is gained by meeting the legal requirements of a national, state, or local government. A nation grants certain rights and privileges to its citizens.
a citizen of the united states is a corporate citizen with corporate status created by the corporation called united states and is acting as their agent for the purpose of collecting revenue this citizen has only privileges and immunities under the 14th amendment