[401-450] -

: By 450 AD, the Huns had become a dominant force. A famous incident involved Honoria, sister of Emperor Valentinian III, sending an engagement ring to Attila the Hun, effectively inviting him to invade the West. Modern Technical & Regulatory Contexts

: He ordered the building of the Church of Saint Nicholas in Myra, preserving one of the earliest records of the historical figure. The Decline of Rome : [401-450]

In modern usage, "401–450" frequently appears in specific administrative and regulatory frameworks. 401 Area Code - Location map, time zone, and phone lookup : By 450 AD, the Huns had become a dominant force

: The Vandals captured Carthage in 439, establishing it as their capital and further weakening Roman naval control in the Mediterranean. The Decline of Rome : In modern usage,

: The Visigoths, led by Alaric , sacked Rome for the first time in 800 years, signaling the empire's vulnerability.

: The massive fortification of Constantinople that protected the city for over a millennium.