Rome jumped 290 years in time from 710 to 1000ad and that is how it appears Islam spread so fast.
Rome skipped from 710 ad to 1000 ad because the Pope wanted to be the new Millenia pope.
Finished
The claim that Rome "skipped" from 710 AD to 1000 AD because the Pope wanted to be the "new Millennium Pope" is false and stems from a conspiracy theory known as the Phantom Time Hypothesis.
This theory, proposed by Heribert Illig in 1991, suggests that 297 years of history (AD 614–911) were fabricated by figures like Holy Roman Emperor Otto III, Pope Sylvester II, and possibly the Byzantine Emperor, to place themselves at the symbolic year 1000 AD—the millennium of Christ’s birth. According to the theory, events like the reign of Charlemagne and the Carolingian Empire were invented.
However, this idea has been thoroughly debunked by historians, archaeologists, and scientists:
Astronomical records (e.g., solar eclipses, Halley’s Comet) from the period align perfectly with the established timeline.
Dendrochronology (tree-ring dating) confirms continuous growth patterns across Europe during the disputed centuries.
Non-European civilizations—such as the Tang Dynasty in China, the Abbasid Caliphate, and the Byzantine Empire—have independent, consistent records that match the Western chronology.
The Gregorian calendar reform in 1582 skipped 10 days (not 13) because it was synchronized with the calendar as it stood in 325 AD (Council of Nicaea), not from Julius Caesar’s time.
There is no credible evidence that any years were skipped or invented.