Place the events related to the Russian Revolution in chronological order. Place the earliest event at the top and the last event at the bottom.

A rebellion forces Tsar Nicholas II from power.

Vladimir Lenin and the Bolsheviks seize power.

Russia pulls out of World War I.

Involvement in World War I causes hardships in Russia.

Involvement in World War I causes hardships in Russia.

A rebellion forces Tsar Nicholas II from power.

Russia pulls out of World War I.

Vladimir Lenin and the Bolsheviks seize power.

Which event caused the United States to lead a war in Afghanistan?

A.
the ISIS attacks on Iraq

B.
the civil war in Syria

C.
the September 11, 2001, attacks on New York and Washington, D.C.

D.
the attacks by Hamas on Israel

C. The September 11, 2001, attacks on New York and Washington, D.C. caused the United States to lead a war in Afghanistan.

Why did the Cold War spread to Vietnam and Korea?

A.
The Chinese were interfering with the governments there.

B.
The Soviet Union had installed pro-Soviet governments there.

C.
Communist governments had taken over the northern parts of the countries.

D.
Cuba made agreements with the countries for protection.

B. The Soviet Union had installed pro-Soviet governments in Vietnam and Korea, leading to the spread of the Cold War in these countries.

Which of the following contributed to the end of the Cold War?

A.
the fall of the South Vietnamese government

B.
the reunification of the Koreas

C.
the end of the U.S. nuclear weapons program

D.
the reform of the Soviet government

D. The reform of the Soviet government contributed to the end of the Cold War.

Which medical advance involves modifying human DNA?

A.
new surgeries for prostheses

B.
transplants of major organs

C.
genetic engineering

D.
the development of new chemical compounds for medicines

C. Genetic engineering involves modifying human DNA.

How did Joseph Stalin try to improve the Soviet Union’s economy under his five-year plans? Select the two correct answers.

A.
He placed the entire Soviet economy under government control.

B.
He encouraged the Soviet people to embrace fascism.

C.
He forced peasants to form collective farms.

D.
He pushed the Soviet government to adopt democratic reforms.