Discovery of the concept of zero
Behaviorism was concerned with observable stimulus response, learned behavior.
Answer:
It is called the fertile crescent because of it's close proximity to many water sources. The abundant source of fresh water caused the soil to be unusually fertile for the area and allowed for farming.
Answer:
The Korean War was the first militarized instance of containment, as U.S. and South Korea fought against communist North Korea.
Key Points
In June 1950, North Korean troops surged across the border into South Korea, triggering the first major confrontation between the forces of the communist and non-communist worlds.
The Korean War was the first time the policy of containment spread outside the initial Asian defense perimeter as defined by the U.S. Secretary of State.
The success of the Inchon landing inspired the U.S. and the United Nations to adopt a rollback strategy to overthrow the Communist North Korean regime, which was later revoked after the Chinese Army intervened.
The cease-fire armistice that resulted from the Korean conflict divided Korea into a Communist northern state and a republican southern state, with a demilitarized zone between the two territories that remains to this day.
Currently, American troops are still stationed in South Korea.
Explanation:
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