Answer:
1844-1877 As the nation expanded and its population grew, regional tensions, especially over slavery, led to a civil war — the course and aftermath of which transformed American society. Key Concept 5.1: The United States became more connected with the world as it pursued an expansionist foreign policy in the Western Hemisphere.
Explanation:
slavery started the Civil war. problems between the north and south
Zimmerman telegraph, sinking of the Lusitania, and the bombing on Pearl harbor. <span />
Answer:
Sectionalism is loyalty to one's own region or section of the country, rather than to the country as a whole.
Answer:
<em>A</em>
Explanation:
In World War II, rubber had many uses, including building vehicles and planes for the war effort, and was scarce since it is mainly found in South America, central Africa, and Southeast Asia.