Answer:
Correct answer is C. The resignation of Mikhail Gorbachev
Explanation:
Option A is not correct as this treaties are important for the limitation of weapon arsenal, but didn't lead to end of Cold War.
B is not correct as the defeat of US in this war showed that Communism is still alive.
C is correct as after his removal Soviet Union was dissolved, which led to end of Cold war.
D is not correct as China was opened towards the west even during the Cold war.
The territory gained in the Treaty of Guadalupe Hidalgo is also known as the Mexican Cession. The reason the US was able to gain this land from Mexico was due to their military victory in the Mexican-American War. This treaty gave the United States several different modern day states including California, Arizona, New Mexico, and parts of Colorado/Utah. This treaty helped America spread their influence/power during the middle of the 19th century.
In writing this headline I would suggest focusing on the perspective of each party based upon their political views. A colonial patriot would support this action and applaud the revolutionary method of protest. However, a loyalist would consider this act treasonous and would not support it.
