What sentence states the central idea for patriotism?

The answer I would use is
Patriotism or national pride is the feeling of love, devotion, and sense of attachment to a homeland or the country and alliance with other citizens who share the same sentiment to create a feeling of oneness among the people.

Patriotism sentence example. His patriotism is fervent, but narrow and exclusive. Patriotism is a maggot in their heads.Patriotism is support for one's country because you feel pride in it, and a belief in the values of that country. Example: ... Instead of just a positive feeling of pride in your country, nationalism is a feeling of superiority.

Explanation:

Hope this helps you XD ✌️carry on ur learning !!

Example support i believe : )