They were considered to be land grabs to achieve Manifest Destiny.
Texas.
The War for Texas Independence. The Annexation of Texas by the United States.
Texas
He supported the annexation of Mexican Texas.
Texas.
The US annexation of Texas.
Manifest Destiny.
The US wanted the Mexican Lands of Alta California; under the banner of "Manifest Destiny", to rule from sea to sea (from the East Coast to the West Coast). California, Utah, Nevada, Arizona, and New Mexico are the result of the Mexican War.
The annexation of Texas as a US state in 1846 directly led to the war, but US ambitions toward the Mexican lands in the West were the driving force for the conflict.
The War for Texas Independence. The Annexation of Texas by the United States.
I not sure but the Mexican war was prompted by the annexation of Texas. I hope this help!
The Annexation of Texas.