Answer:
Option D, the capture of Monterrey, is the right answer.
Explanation:
The Battle of Monterrey took place in the period between September 21–24, 1846. This battle was a part of the Mexican American War. The significance of this battle lies in the very fact that it was the first major battle fought on the soil of Mexico.
The other events took place in the years following the Battle of Monterrey. For instance, the capture of Mexico City occurred after the Battle of Mexico City that took place between September 8 to September 15, 1847.
The Treaty of Guadalupe Hidalgo was a peace treaty which was approved on 2nd February 1848. It was the treaty that put an end to the ongoing Mexican-American War.
The Compromise of 1850 was a series of five different bills enacted by the Congress of the United States in September 1850. This compromise defused the political confrontation between the slave and free states over the status of the region acquired in the Mexican–American War.
