Answer:
1. oil companies
2. Automakers
Explanation:
The industries that benefited during this period are mostly oil companies and automakers
The Mexican-American War, waged between the United States and Mexico from 1846 to 1848, helped to fulfill America's "manifest destiny" to expand its territory across the entire North American continent, thus making the Manifest Destiny a result of the war.
It basically tells the other person “do whatever you want as long as it doesn’t affect me”