What can cause feelings nationalism and patriotismo to increase in a country?

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Explanation:

Economic boom, or the leader tries to appeal to the larger classes, typically the working class. The people might think they are getting more job opportunities and better living, so they might be more vulnerable to the leader's ideologies.

ń, wǒ shuō yīngyǔ, dàn wǒ huì shuō qítā yǔyán, rú xībānyá yǔ fǎyǔ yìdàlì yǔ hé pǔtōnghuà, suǒyǐ bùyào pànduàn, dànshì