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Origins of the Cold War. A Difference In Opinion. 1945 was the beginning of a long period of distrust & misunderstanding between the Soviet Union and its former allies in the West (particularly the US)

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A difference in opinion
A Difference In Opinion

1945 was the beginning of a long period of distrust & misunderstanding between the Soviet Union and its former allies in the West (particularly the US)

  • Soviet Union believed a powerful central government should control the economy as well as the government (communism)

  • US believed that businesses should be privately owned (more democratic)

Post wwii europe 1945

Western Europe and America are alarmed by Soviet advances in Eastern Europe

Many Europeans and Americans believed that the communists were trying to take over the world!

March 1946 - Winston Churchill warns of the “Iron Curtain” of Soviet totalitarianism.

Post-WWII Europe (1945)

The iron curtain
The Iron Curtain Eastern Europe

  • Soviet dictator Joseph Stalin placed most of the Eastern European countries under communist control referred to as the “Eastern Bloc”

  • The United States led the Western Bloc countries of Western Europe

  • The imaginary line separating the two was called the “Iron Curtain”

Origins of the cold war

The “Iron Curtain” Eastern Europe

“From Stettin in the Balkans, to Trieste in the Adriatic, an iron curtain has descended across the Continent. Behind that line lies the ancient capitals of Central and Eastern Europe.”-- Sir Winston Churchill, 1946

Division of germany
Division of Germany Eastern Europe

  • End of WWII, Allies divided Germany into 4 sections to keep it from regaining power. US, Great Britain, France, & Soviet Union each controlled a section

  • 1948: Western Allies wanted to reunite Germany, but Soviets disagreed

    • Soviet section became “East Germany” and the reunited sections became “West Germany”

    • Berlin was also divided into East & West

Origins of the cold war

Post-War Germany Eastern Europe

City of berlin divided
City of Berlin Divided Eastern Europe

A nuclear war
A Nuclear War Eastern Europe

  • Each side thought the other was trying to rule the world

  • Neither side would give up, people lived in fear that another world war would erupt. This time it could be a nuclear war, which could destroy the entire planet

  • Countries began to form alliances to protect themselves…

Origins of the cold war
NATO Eastern Europe

  • 1949: Western European countries, Canada, & US formed the

    North Atlantic Treaty Organization (NATO)

    Each nation in NATO believed the Soviet Union would not attack western Europe if the U.S. would launch nuclear war in return

Origins of the cold war

The “Iron Curtain” Eastern Europe

The warsaw pact

What was the Eastern EuropeWarsaw Pact?

an alliance of the Soviet Union and its communist satellite nations

Why was it formed?

to counter NATO

an anti-Western military alliance

Why “Warsaw”?

Warsaw, Poland was the city where the treaty was signed

Satellite nation?

Satellite nations are nations that are dependent upon a stronger power.

The Soviet satellite nations were Bulgaria, Romania, Czechoslovakia, Hungary, Poland, and East Germany.

The Warsaw Pact

Origins of the cold war

Soviet union
Soviet Union side

  • Had a permanent seat on the UN Security Council

  • Influenced other communist countries and dictatorships around the world

  • Occupied the largest country in the world, 3rd largest population, & the 2nd largest economy

  • Had military and space technology, a worldwide spy network (the KGB), & one of the largest stockpiles of nuclear weapons in the world

United states
United States side

  • Also had a permanent seat on the UN Security Council, as well as strong ties with Western Europe & Latin America

  • 4th most populated country

  • Had powerful military support from NATO, the largest navy in the world, bases all over the world, the CIA, and a large reserve of nuclear weapons

Brainpop time
BrainPOP time side


  • Username: htms

  • Passwork: husky

  • You are to watch the Cold War video and complete the graded quiz. Email your results to me! Include your name and your class color


What about berlin

The capital Berlin, deep within Soviet-controlled territory, was also divided into four occupation zones.

What about Berlin?

Berlin divided
Berlin Divided was also divided into four occupation zones.

The berlin wall

Berliners hated living under communism was also divided into four occupation zones.

Luckily, West Berlin and freedom were just across the street

About 3 million people fled to West Berlin looking for political freedom and better lives

The East German government wanted it to stop

Watch Berlin Clip

In August 1961, East Germany built a 103 mile wall between East and West Berlin.

Guarded by Soviet troops, it became a symbol of the split between western and eastern Europe.

The Berlin Wall

Origins of the cold war

1961 – Berlin Wall Built was also divided into four occupation zones.

Origins of the cold war

Cold War Summary: was also divided into four occupation zones.

Soviet & Eastern Bloc Nations

Warsaw Pact

US & the Western Democracies


GOAL spread world-wide Communism

GOAL “Containment” of Communism

  • How’d They Do It?:

  • Espionage (KGB vs. CIA)

  • Arms Race (nuclear weapons)

  • Competition for the minds and hearts of Third World peoples (Communism vs. democracy

  • NATO vs. Warsaw Pact

Beginnings of the cold war
Beginnings of the Cold War was also divided into four occupation zones.