The answer is "prefrontal cortex".
The prefrontal cortex (PFC) refers to the cerebral cortex which covers the front piece of the frontal projection. This mind district has been embroiled in arranging complex subjective conduct, identity articulation, basic leadership, and directing social conduct.
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.
C because we evolved from apes