we won and took what is now the West
Mexico
Mexico City.
James Polk
During the course of the US Civil War, France set up a "kingdom" in Mexico. After the war, the United States demanded that France evacuate Mexico and placed an army on the Mexican - US border.
US vs Mexico 1846-1848
During the Mexican-American War (1846-1848)
Not directly, and the US intervened before that could happen. Germany did attempt to gain Mexican collaboration with the Zimmerman Telegram.
All the way to Mexico City.
It was during the US Civil War.
The US claimed what became the New Mexico territory during the Mexican-American War. It was primarily a linear western extension from Texas.
The US captured Mexico City.
Daniel S. Scott