I am going to go ahead and say that your answer is C because regions can end for many reasons and most of which I'm certain of which are affected by the physical characteristics of the region.
I hope that this helps. :)
(A) should be the answer your looking for.
Answer:
Arizona, California, Colorado, Nevada, New Mexico, Utah, and Wyoming.
Explanation:
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.
the answer is A because the Gulf of Tonkin Incident happened in 1964.
I hope this helps!!
It would have to be 144 years that they lead on 2-term limits.