"The South had more immigrants in large cities" was not a reason for the growing division between North and South after 1820, since the North had far more immigrants.
Answer:
Under the Treaty of Guadalupe Hidalgo, which settled the Mexican-American War, the United States gained more than 500,000 square miles (1,300,000 square km) of land, expanding U.S. territory by about one-third.
Explanation:
The arms race changed the relationship between the democratic west and the Soviet Union and created an atmosphere of fear and national insecurity known as the Cold War. During the Cold War, the Communist and Democratic nations accumulated huge arsenals of nuclear weapons that could destroy entire regions of the Earth. From this mammoth amount of power and influence came distrust, accusations of treason, and an era of nationalism. Today, many of the weapons still exist and pose a large nuclear threat, causing both the West and the East to fear each other as well as the possibility of nuclear warfare.
ancient Egypt
Africa's first great civilization emerged in ancient Egypt in c. 3400 BC. Carthage was founded by Phoenicians in the 9th century BC. Ancient civilization, based around the River Nile in Egypt, which emerged 5,000 years ago and reached its peak in the 16th century BC.
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