Final answer:
Transcaucasia is the region that attempted to gain independence from Azerbaijan.
Step-by-step explanation:
The region that attempted to gain independence from Azerbaijan is Transcaucasia.
Transcaucasia is made up of the independent countries of Georgia, Armenia, and Azerbaijan. These countries were annexed by the Russian Empire in the 18th and 19th centuries, and were former republics within the Soviet Union. When the Soviet Union collapsed in 1991, these three small republics declared independence and separated from the rest of what became Russia.