A system where only the national government is sovereign is called

Dictatorship

Explanation:

Sovereign means that an institution could rule over the rest of the people with complete authority. This can be found in a Dictatorship.

Under the dictatorships, every words that spoken by high government officials are absolute. The people have no right to question them unless they wanted to expose themselves to potential punishments.

The national government government will control every aspects of citizens life. This include things such as the type of jobs that they can pursue, the types of religion/ideologies should be taught to the people, the type of news that can be broadcasted in televisions, etc.

no , per capita income is not a true measure of the development because: -it only tells us about average income not how income is distributed among the people.it only give us an idea of the economic aspect.it is only at the qualitative basis.moreover, income is not only the way of development other factors are also as much as important as income.

answer; regard the action of other people negatively;