640

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Template:Use mdy dates Template:About year Template:Short description Script error: No such module "Sidebar". Script error: No such module "Sidebar". Script error: No such module "Year in various calendars". Year 640 (DCXL) was a leap year starting on Saturday of the Julian calendar. The denomination 640 for this year has been used since the early medieval period, when the Anno Domini calendar era became the prevalent method in Europe for naming years.

Events

By place

Europe

Britain

Africa

Asia

File:Emperor Taizong's campaign against Xiyu states.svg
Emperor Taizong's campaign against the Western Regions

By topic

Religion

Economy

  • A surge in atmospheric lead in ice core drilled in the Colle Gnifetti Glacier in the Swiss Alps signals an increase in silver mining because of economic recovery, after natural disasters in 530s and 540s.[6]

Births

Deaths

References

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  1. Butler, Alfred, The Arab Conquest of Egypt and the Last Thirty years of Roman Dominion, p. 222
  2. Al Farooq, Umar by Muhammad Husayn Haykal, chapter nr. 21
  3. "Fires, Great", in The Insurance Cyclopeadia: Being an Historical Treasury of Events and Circumstances Connected with the Origin and Progress of Insurance, Cornelius Walford, ed. (C. and E. Layton, 1876) pp24
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  5. Hill, John E. (2003). "The Kingdom of Da Quin". The Western Regions according to the Hou Hanshu (2nd ed.). Retrieved 2008-11-30
  6. "Why 536 was 'the worst year to be aliveTemplate:'". sciencemag.org Nov. 15, 2018.
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