Manufacturing in the northeast
I think this is something that’s more catered to you. What’s something about Robert Kennedy that you didn’t know more, but you know now.
The most lasting effect of the war on Mexicans was psychological. A tragic loss of soldiers and battles, the humiliation of having their capital and much of the country occupied by enemy troops, and the ignominy of a peace treaty that alienated half of the national territory (counting Texas) was a severe blow.
Although there is no exact date for this, generally speaking it would be the period of the "late-1700s" that saw the beginning of the Industrial Age in the United States, since this is when machinery started played a larger role in the economy. <span />