Context: During the Perestroika era, The Law on the Status of the Estonian Language was adopted in January 1989. The collapse of the Soviet Union led to the restoration of Republic of Estonia's independence. Estonian went back to being the only state language in Estonia which in practice meant that use of Estonian was promoted while the use of Russian was discouraged.

Question: What historical event once again freed Estonia?
Answer: collapse of the Soviet Union

Question: Following the Soviet collapse what became the only official Estonian Language?
Answer: Estonian

Question: What language was no longer promoted as one of Estonia's main languages?
Answer: Russian

Question: What came into being in January 1989?
Answer: The Law on the Status of the Estonian Language

Question: What historical event once again enslaved Estonia?
Answer: Unanswerable

Question: Following the Soviet rise what became the only official Estonian Language?
Answer: Unanswerable

Question: What language became less popular prior to the Soviet collapse? 
Answer: Unanswerable

Question:  What came into being in February 1989?
Answer: Unanswerable

Question: When was Russian encouraged to be used in Estonia?
Answer: Unanswerable