670s

Events

Pippin the Middle secures his power in Austrasia .
In 674 a long-term siege of Constantinople by the Arabs begins .
The Greek fire is invented by Kallinikos . In 678 the traditional first operation against the Arab fleet takes place, which then has to break off the siege of Constantinople.
Khan Asparuch founds a Bulgarian Empire on the Lower Danube in 679 . Originally at home in southern Russia, the Bulgarians took advantage of the weakening of the Byzantine Empire from the Arab attack on Constantinople to cross the Danube in Moesia .

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