Multiple choice

Which of these contributed to increasing tensions at the beginning of the Cold War period? 

  1. the United States' participation in the Korean War

  2. the Soviet Union to place nuclear missiles in Turkey

  3. the USt construction of a wall dividing East and West Berlin

  4. the military intervention in Hungary by NATO forces

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A Correct answer
Explanation

The Korean War (1950-1953) was a major early conflict of the Cold War, representing the first military clash between the U.S.-led forces and communist forces, significantly increasing global tensions.