He feeling of fervent devotion toward one’s nation above all others is known as .

i believe the answer is: nationalism

nationalism make people prioritized their country above other countries, or even above their own well being. this type of behaviours could bring both positive and negative result.

one of the positive result is that nationalism would make the people willing to make sacrifice to the country when needed (such as the time when the country is being invaded). one of the negative result is that it can make those people feel that other countries are inherently inferior compared to their country.