Answer:
what is the question? ....
Answer
The war officially ended with the February 2, 1848, signing in Mexico of the Treaty of Guadalupe Hidalgo. The treaty added an additional 525,000 square miles to United States territory, including the land that makes up all or parts of present-day Arizona, California, Colorado, Nevada, New Mexico, Utah and Wyoming. Mexico also gave up all claims to Texas and recognized the Rio Grande as America’s southern boundary. In return, the United States paid Mexico $15 million and agreed to settle all claims of U.S. citizens against Mexico.
https://www.history.com/topics/mexican-american-war/treaty-of-guadalupe-hidalgo#section_2
Marginal costs. Keep in mind that marginal means on the edge of something, so the cost of producing one more unit would be on the edge. Hope this explanation helps.
