710

File:Age-of-caliphs-en-text.png begin a raiding expedition against the Visigothic Kingdom in Spain (8th century)]]

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Year 710 (DCCX) was a common year starting on Wednesday of the Julian calendar. The denomination 710 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

The Byzantine outpost of Cherson (Crimea) rebels (with Khazar assistance) against Emperor Justinian II. He sends a fleet under the patrikios Stephen, which retakes the city and restores Byzantine control. The fleet, however, is struck by a storm on its way back and loses many ships, while the Chersonites, again with the aid of the Khazars, rebel anew.{{cite book|title=A History of the Byzantine State and Society|last=Treadgold|first=Warren T.|year=1997|publisher=Stanford University Press|location=Stanford, CA|isbn=978-0-8047-2630-6|url=https://books.google.com/books?id=nYbnr5XVbzUC|page=341}}
The Byzantine general Leo (future emperor Leo III) recovers the Abkhazia (Caucasus) for the Byzantine Empire, from the Arabs.{{cite book|editor-last=Venning|editor-first=Timothy|title=A Chronology of the Byzantine Empire|url=https://archive.org/details/chronologybyzant00venn|url-access=limited|year=2006|publisher=Palgrave Macmillan|isbn=978-1-4039-1774-4|page=[https://archive.org/details/chronologybyzant00venn/page/n218 192]}}

Roderick becomes king of the Visigoths, but the Visigothic nobles in Septimania rebel, and proclaim the previous ruler's son Akhila king. The Visigothic Kingdom is divided into two sub-kingdoms, suffering the first Muslim raid expedition against the southern Iberian Peninsula.David Nicolle (2008). Poitiers AD 732, Charles Martel turns the Islamic tide (p. 17). {{ISBN|978-184603-230-1}}
An Arab army is invited into Ceuta by its governor, Julian, who is an opponent of Roderick. He encourages them to invade the Iberian Peninsula. Tariq ibn Ziyad is appointed governor of Tangier (Morocco), and establishes a Moorish garrison of 1,700 men.
Lupus I, duke of Gascony, is assassinated in his attempt to seize Limoges (France). Eudes becomes ruler over both Gascony and Aquitaine.
The Madara Rider, an early medieval rock relief, is carved on the Madara Plateau east of Shumen in Bulgaria (approximate date).

Kings Ine of Wessex and Nothhelm of Sussex fight against King Geraint of Dumnonia, who dies in battle. Ine's advance brings him control of what is now Devon; he establishes a fortress at Taunton.Swanton, Anglo-Saxon Chronicle, pp 42–43
Beorhtfrith fights against the Picts between Haefe and CaereAccording to the Anglo-Saxon Chronicle (assumed to be between the rivers Avon and Carron, which flow into the Firth of Forth in Scotland).

Salih I ibn Mansur founds the Muslim Kingdom of Nekor (Morocco). He converts the local Berber tribes to Islam.

April 5 – Emperor Zhong Zong of the Tang dynasty has his chief ministers of court, sons-in-law, and high-ranking military officers engage (during the Cold Food Festival) in the festive game of tug of war, within a palace of Chang'an.
July 3 – Zhong Zong is assassinated, allegedly poisoned by Empress Wei, who fails to install her daughter Li Guo'er as heir to the throne. Princess Taiping and her nephew Li Longji launch a coup, and restore Rui Zong as emperor.
The Asuka period, the second and last part of the Yamato period, ends, and the Nara period begins; Heijō-kyō (Nara) becomes the capital of Japan.

October 5 – Pope Constantine departs for a year-long visit to Constantinople. He will be the last pontiff to visit the capital for more than a thousand years.
The first (wooden) Al-Aqsa Mosque is finished.