Aperson who is a member of a nation and is entitled to its protection is a(n) .

a person who is a member of a nation and is entitled to its protection is a citizen.

In a nation, a citizen has to follow the laws implemented and introduced by the government, and is entitled to the rights and privileges the government guarantees.

In the US , a person can become a citizen by being born on US soil, and outside to a parent who is a US citizen.

Citizen can be defined as a legally recognized subject or national of a state or commonwealth, either native or naturalized.

worldwide, 780 million people do not have access to an improved water source. an estimated 2.5 billion people lack access to improved sanitation (more than 35% of the world's population)