Because they both reunited the people of the country as well as it gave them a sense of belonging.
"Manifest Destiny" was the slogan under US President Polk's administration during the Mexican War of 1846-1848, in which the US was to be from sea to shining sea; from the Atlantic to the Pacific Oceans. California, Utah, Nevada, Arizona, and New Mexico are the products that came from the Mexican War.
The west was in good terms with the Union, and was taking place in the Westward expansion that branched from manifest destiny.
The Mexican War 1846-1848, was under the banner of "Manifest Destiny."
In the context of the American Civil War, Republicans passed laws to strengthen the power of the federal government. The war was fought from 1861 to 1865.
Mexico has passed the boundary of the United States, has invaded our territory and shed American blood upon the American soil
Manifest Destiny
The phrase "manifest destiny" is most often associated with the territorial expansion of the United States from 1812 to 1860. This era, from the end of the War of 1812 to the beginning of the American Civil War, has been called the "age of manifest destiny"
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The Mexican Cession and the annexation of Texas achieved Manifest Destiny for the US.
Manifest Destiny resulted in the population of the western US, the near extinction of Native Americans and a war with Mexico.
after the war of 1812
The Trent Incident, The St. Albans Raid, The Civil War, the Fenians, Manifest Destiny, and the end of trade
the mexican-american war
Manifest destiny led to Texas becoming a part of the United States and lead to a war with Mexico.
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the doctrine of manifest destiny
after the war of 1812