B. Morse created the telegraph in the United States in 1837.
Answer:
Westward expansion had a negative impact in the United States. Manifest Destiny played a role in motivating settlers to move west. Other motivations for moving west were gold, land, and opportunity. This also hurt Natives because it killed them and took their land.
Answer:
The long border between the two countries means that peace and security in that region are important to the U.S.'s national security and international trade. The U.S. is Mexico's biggest trading partner and Mexico is the U.S.'s third-largest trading partners.
