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
Italian campaign invasion of Italy in mainland
In many ways, the War of 1812 was indeed a "second revolution" because once again the Americans were up against the British, and once again they "won". This placed them with far more economic independence and pride in the nation. It gave them the respect of the world, which made for better foreign relations.
Prior to the outbreak of war, French and British politicians tried to solve their problems with Hitler and Mussolini through a policy of "appeasement", since they wanted to avoid war at all costs.
