One of the reason of why maybe a war can be started in the 1812 is economy problems food resources, or even an disagreement.
Andrew Jackson. The Manifest Destiny, being the goal of reaching "sea to shining sea," was a major goal for this president. He was the president who initiated the Lewis and Clarke expedition. Drop a thanks if this helped !
A. wartime labor shortages. The outbreak of World War II led to many
Americans enlisting to fight overseas.
As a result, there was a shortage of labor. Women and minorities including Mexican
Americans were employed at factories to supply the army for the war effort.
Some Mexican Americans enlisted and fought in the U.S. army.
I believe you should follow the line and see where it ends up
Hope this helps