I am the official currency of a nation nestled in the Caucasus Mountains, a land famed for its ancient winemaking traditions and its strategic location bridging Europe and Asia. My name shares a root with a word signifying 'money' or 'cash' in several languages. I was introduced after this nation regained its independence in the early 1990s, replacing the Russian ruble. The national bank issuing me is deeply involved in promoting financial stability and modernizing the payment systems within the country.

1. This country is known for its unique alphabet.
2. It borders both the Black Sea and the Greater Caucasus mountain range.
3. One of the oldest churches in the world is located here
4. The name of the currency's subunit is 'tetri'.