The feeling of fervent devotion toward one's nation above all other is known as

Nationalism

Explanation:

Nationalism is a political ideology that is characterized by the celebration of a particular nation above all others. This is specially the case when the interests of the beloved nation (usually the place of birth of a person) trump those of other countries. Nationalism is characterized by a fervent devotion to a nation, and the development if a national identity that unifies the whole population. Nationalism only became a recognizable political phenomenon in the 18th century.

nationalization is the set of dispositions and operations by means of which the state assumes, in varied form, the administration of private companies, of groups of companies or of the totality of certain economic sectors previously managed by individuals, such as the land portions. nationalization is the opposite of privatization. it is also called nationalization of the means of production, although a nationalized company can be previously both national and foreign ownership. nationalization or nationalization is a very characteristic action of ideologies such as socialism and nationalism.