The Prague Spring was a period of political liberalization in Czechoslovakia in 1968.

Alexander Dubcek was the First Secretary of the Communist Party of Czechoslovakia from January to April 1968.

The Prague Spring aimed to democratize Czechoslovakia, improve the economy, and increase freedom of speech.

The Soviet Union invaded Czechoslovakia in August 1968 to crush the Prague Spring.

The Soviet invasion of Czechoslovakia crushed the Prague Spring and led to the installation of a hardline communist government.

The Prague Spring increased tensions between the Soviet Union and the West and led to a renewed crackdown on dissent in Eastern Europe.

The Prague Spring inspired other Eastern European countries to challenge Soviet dominance and led to a wave of democratization in the region in the 1980s.

The Prague Spring began in January 1968 with the election of Alexander Dubcek as First Secretary of the Communist Party of Czechoslovakia.

The Prague Spring ended in August 1968 with the Soviet invasion of Czechoslovakia.

An estimated 100 people were killed during the Soviet invasion of Czechoslovakia.

An estimated 200,000 Soviet troops were involved in the invasion of Czechoslovakia.

The Soviet military operation that invaded Czechoslovakia was called Operation Danube.

The Czechoslovakian reform movement that preceded the Prague Spring was called the Prague Thaw.

Antonin Novotny was the Czechoslovakian leader who was ousted from power during the Prague Spring.

Alexander Dubcek was the Czechoslovakian leader who replaced Antonin Novotny during the Prague Spring.