This is the year 1031; the number 1031 may also refer to:

• 1031 form ? Section 1031 of the U.S. Internal Revenue Code allows investors to defer capital gains taxes on the exchange of like-kind properties.

• 1031 exchange ? Transaction under United States law which specifies that if an asset is sold and the proceeds of the sale are then reinvested in a like kind asset, then no gain or loss is recognized, allowing the deferment of capital gains taxes that would otherwise have been due on the first sale.

Events

• The Moorish Caliphate of Córdoba collapses.
• Byzantine general George Maniaces captures Edessa.
• Henry I becomes King of France.
• Bezprym seizes the throne of Poland from Mieszko II.

Births

• Matilda of Flanders, Queen consort of the Kingdom of England (d.1083)
• Shen Kuo, renowned polymath scientist of the Song Dynasty in China (d. 1095)

Deaths

• July 20 ? King Robert II of France (b. 972)
• September 2 ? Saint Emeric of Hungary
• Gang Gam-chan, Korean official and military commander (born 948)

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