A king chain is a necklace whose links are interwoven in a special way. It is very compact.
The king’s chain is also called a “Byzantine chain”. The Byzantine Empire, also called the Eastern Roman Empire or Byzantium, was the continuation of the Roman Empire in its eastern provinces during Late Antiquity and the Middle Ages, when its capital was Constantinople (present-day Istanbul and former Byzantium). It survived the fragmentation and fall of the Western Roman Empire in the 5th century A.D. And continued to exist for another thousand years until it fell to the Ottoman Turks in 1453. For most of its existence, the Empire was the most powerful economic, cultural and military force in Europe. “Byzantine Empire” is a term created after the end of the empire