Final answer:
The invasion and occupation of Byzantine territories by the Ottomans led to anti-Western feelings in Byzantium.
Step-by-step explanation:
The anti-Western feelings that began in Byzantium were largely due to the invasion and occupation of their territories by Turkic tribes, particularly the Ottomans. The Byzantine Empire faced invasions from Persians and Arabs in the seventh century, leading to significant loss of territory and a downturn in trade. The arrival of Turkic tribes challenged the Byzantines' power, and the rise of the Ottomans eventually led to the fall of the Byzantine Empire in 1453.
This loss of political and territorial control, as well as the religious divide between Christians and Muslims, contributed to the development of anti-Western sentiments in Byzantium. While the Ottoman Empire itself was influenced by Byzantine culture and absorbed many Byzantine scholars and artists, there has been a centuries-long legacy of distinguishing between Byzantine-Ottoman culture in the east and Roman-European medieval culture in the west.