In comparing the Byzantine Empire to the old Roman Empire, one clear difference lies in the longevity of the Byzantine Empire. The Byzantines lasted significantly longer than the old Roman Empire. While the Roman Empire fell in the 5th century AD, the Byzantine Empire endured until the 15th century AD. This longevity allowed the Byzantines to develop a unique culture and society that differed from that of the old Roman Empire.
Another key difference is that the Byzantines were more focused on the Eastern part of the Roman Empire, while the Western Roman Empire was centered in Rome. This distinction led to differences in language, religion, and culture between the two empires. The Byzantines also faced different external threats compared to the Romans, such as invasions from various groups like the Goths, Huns, and Persians.
Additionally, the Byzantine Empire had a more stable territorial extent compared to the old Roman Empire, which experienced significant territorial expansions and contractions. The Byzantine territory remained relatively consistent over time, with its capital in Constantinople (modern-day Istanbul), while the Roman Empire saw fluctuations in its borders due to wars, invasions, and internal conflicts.