how was the idea of manifest destiny brought about by nationalism

Nationalism played a key role in fueling the idea of Manifest Destiny in the 19th century United States. Here’s how:

National Pride and Superiority: Nationalism often fosters a sense of national pride and exceptionalism. In the case of Manifest Destiny, this translated to a belief in the inherent superiority of American culture and democracy. Americans felt destined to spread their way of life across the continent.

Expansionist Goals: Nationalism can also encourage expansionist goals. The idea of a nation fulfilling its potential by acquiring new territories was very much alive during this period. Manifest Destiny provided a justification for westward expansion, portraying it as a right and a duty.