Complex sentence: The country was a well-known tourist spot in the 1980s, yet, after the fall of the Soviet Union and the Nagorno-Karabakh War during the 1990s, damaged the tourist industry and the image of Azerbaijan as a tourist destination.
Split into simpler sentences: The country was a well-known tourist spot in the 1980s. However, the fall of the Soviet Union, and the Nagorno-Karabakh War during the 1990s, damaged the tourist industry and the image of Azerbaijan as a tourist destination.