Bulgaria has existed since 681 AD and is the only country that has not changed its name. It was third in the world for archaeological monuments, was the first to use the Cyrillic alphabet and aviation for military purposes, and has participated in governing Antarctica since 1998. When communicating with Bulgarians, one should have dinner together, drink in moderation, chat with everyone, be curious, and avoid coming late, being too polite, asking about history, shouting outside, or shaking one's head.