dates
In what year did the Great Patriotic War begin?
1941
Which republic was the last to leave the USSR?
Kazakhstan
What were some of the USSR's significant achievements in space exploration?
The first human flight into space (Yuri Gagarin) and the launch of the first satellite (Sputnik-1).
When did the USSR dissolve?
December 26, 1991
How many republics were part of the USSR at its foundation?
Four (RSFSR, Ukrainian SSR, Belarusian SSR, and Transcaucasian SFSR).
What was a "Five-Year Plan"?
An economic development plan for five years.
When was the USSR established?
December 30, 1922
Which republics were the first to leave the USSR?
Lithuania, Latvia, and Estonia
Which Soviet leader implemented the reforms known as "Perestroika" and "Glasnost"?
Mikhail Gorbachev