AD 420

AD 420 refers to the year 420 in the Anno Domini (AD) dating system, which is used to number the years of the Julian and Gregorian calendars. It follows AD 419 and precedes AD 421.

Significant events and developments that may have occurred in AD 420 are dependent on regional historical records. Generally, this period falls within the Late Antiquity era, a time of considerable upheaval and transition in both the Western and Eastern Roman Empires. Historical events potentially relevant to AD 420 might include:

• Political events: Conflicts, successions, or significant decrees issued by emperors or other rulers.
• Military campaigns: Battles, sieges, or expansions of territories.
• Religious developments: Synods, the construction of religious buildings, or the rise of influential religious figures.
• Cultural or intellectual developments: The creation of notable works of art or literature.
• Population movements: Migrations and settlements of various groups.

Detailed information about specific events in AD 420 requires consulting historical sources relevant to the regions and cultures of interest. Given the scarcity of readily available unified global historical records, a comprehensive overview of specific events from every region for this particular year is challenging.