What was the first liquor created?

The answer is "mead".

Mead is an alcoholic beverage made by fermenting honey with water and yeast. It is the oldest known alcoholic drink invented, and was the first alcoholic beverage known to humans. Mead is believed to have originated in ancient Ethiopia around 10,000 BC. It was used as a ceremonial beverage in ancient Egypt and Greece, and was later introduced to Europe by the Romans. Mead is still produced and consumed around the world today, and is particularly popular in the United States, Europe, and Australia.