Context: The multi-national Communist armed forces' sole joint action was the Warsaw Pact invasion of Czechoslovakia in August 1968. All member countries, with the exception of the Socialist Republic of Romania and the People's Republic of Albania participated in the invasion.

Question: In which year was the Warsaw Pact activated in a joint action?
Answer: 1968

Question: Which country did the Pact conquer?
Answer: Czechoslovakia

Question: What country was invaded in August 1998?
Answer: Unanswerable

Question: Which two countries supported the invasion in Czechoslovakia?
Answer: Unanswerable

Question: Czechoslovakia invaded Albania in what year?
Answer: Unanswerable

Question: The Socialist Republic of Romania supported the invasion of what country?
Answer: Unanswerable