This book clarifies the concepts attached to the State. It addresses several themes that are the subject of confusion such as: the country and the fatherland, the State, the Republic and the nation, the people and the population, citizenship and nationality, the hierarchy of norms, protocol, but also concepts whose mastery gives meaning to civic-mindedness, in this case the Constitution, the institutions, the foundations and the symbols of the Republic (with particular emphasis on their meaning, their role and their importance in the life of the nation), the rights, freedoms, duties and obligations of the citizen.