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