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.
Citizenship is the status of being a citizen. If you have citizenship in a country, you have the right to live there, work, vote, and pay taxes! Citizenship comes from the Latin word for city, because in the earlier days of human governments, people identified themselves as belonging to cities more than countries. Citizenship is more than merely living somewhere. If you have citizenship, you have a whole set of rights that non-citizens might not have.