He was assassinated so b.
The answer is <span>Marks the beginning of a distant historical period.
For example, the tragedy of 9/11 could be considered as a turning point because it becomes the reason for Government agencies to start various cyber security programs to monitor potential terrorist activities that endanger the safety of the nation's land (which was leaked by edward snowden)</span>
The correct answer is D. new territory that contributed to the formation of seven new states.
After the Mexican-American War, the US and Mexico agreed to the Treaty of Guadalupe Hidalgo. This treaty favored the United States heavily, as they won the Mexican-American War. The ultimate goal of this war was to gain land from Mexico, which they accomplished. The Mexican Cession resulted in the United States gaining several thousand square miles of territories. This would result in the creation of states like California, Arizona, New Mexico, Utah, Colorado, etc.