What is the name of the Eastern Roman Empire that lasted 1000 years after the fall of the Western Roman Empire?

The correct answer is the Byzantine Empire, which refers to the continuation of the Eastern Roman Empire after the fall of the Western Roman Empire in the 5th century. The Byzantine Empire preserved Roman governance, culture, and law, while also adapting to its Greek-speaking population and the surrounding influences of Christianity and other cultures.

The Byzantine Empire played a crucial role in maintaining the heritage of the Roman Empire and became a center of trade, culture, and diplomacy during the Middle Ages. It was known for its achievements in art, architecture, and the spread of Christianity in Eastern Europe and beyond. The fall of Constantinople in 1453 marked the end of the Byzantine Empire, over a thousand years after the Western Roman Empire's collapse.

In contrast, the Baltic Confederation refers to a loose association of states in the Baltic region and has no relation to the Roman Empire. The Holy Roman Empire, although it claimed to be a continuation of the Roman legacy, was primarily a central European political entity that existed during the medieval and early modern periods, significantly distinct from the Eastern Roman Empire. The Ottoman Empire, which rose to power after the decline of the Byzantine Empire, expanded beyond the territories of the Byzantine, but it is a separate and later empire entirely.