Which Soviet action led to the threat illustrated on this map? A
The placement of nuclear weapons
installations in Cuba
B
Blockading foreign supply ships from
entering the Caribbean
D
The signing of an arms limitations treaty
С
Closing the border between East and
West Berlin

The map represents the placement of nuclear weapons  installations in Cuba as the Soviet action.

The Cuba revolution was initiated when Fidel Castro defeated Fulgencio Batista in the year 1959. This lead Cuba to get assistance from Soviet Unions in terms of finance and military power.  

The Cuba missile crisis happened in 1962 when the Soviets installed nuclear missiles there that increases the tense situation in the US and other small nations.

Therefore, the cold war situation is created between two superpowers that are the US and the Soviet Union.

Learn more about the Cuba missile crisis here:

link

Option: A. The placement of nuclear weapons installations in Cuba.

Explanation:

The Brinkmanship policy between the United States and the Soviet Union resulted in the Cold War. The connection between Cuba and Russia began during the Cuban Revolution in 1959 when Fidel Castro managed to defeat  Fulgencio Batista. During this period, Cuba received military and financial support from the Soviet Union. The Soviet place nuclear missiles in Cuba in 1962 which threaten the U.S. and other neighbouring countries.

the berlin blockade was an international crisis that arose from an attempt by the soviet union, in 1948–49, to force the western allied powers (the united states, the united kingdom, and france) to abandon their post-world war ii jurisdictions in west berlin. in march 1948 the allied powers decided to unite their different occupation zones of germany into a single economic unit. in protest, the soviet representative withdrew from the allied control council. coincident with the introduction of a new deutsche mark in west berlin (as throughout west germany), which the soviets regarded as a violation of agreements with the allies, the soviet occupation forces in eastern germany began a blockade of all rail, road, and water communications between berlin and the west. on june 24 the soviets announced that the four-power administration of berlin had ceased and that the allies no longer had any rights there.