Persia and Greece wore themselves out fighting each other just in time for worshippers of mohammed to take advantage of the consequent fatal weakness.
Not Persia and Greece.
Persia was/is Fars/Pars - one of the provinces of the Iranian Empire. They always called themselves the Iranian Empire - consisting of various Irani peoples like the Persians, the Medes, the Kurds, the Baluchis, the Tajikis (Sogdians), Bactrians, the Parthians. You had other Irani peoples like the Sarmatians, the Alans (ancestors of modern day Ossetians ) etc.
This was technically the Sassanid Iranian Empire - the empire of the “truth” “Aryan” - Iran is derived from the same root as Aryan/Iron/Alan
There were no “Greeks” by the 7th century. They called themselves Romans. This was not the “Byzantine Empire” - a term coined by later Rennaissance writers to create the other, but this was the ROMAN Empire with the Basileus, emperor of Rome.
This was acknowledged by the Ottomans who called their conquered lands as the Sultanate of RUM (Rome).
the greek speaking, orthodox called themselves Romaoi - Romans right until the 1800s when Shelley and other romantics tried to connect them to the hoary past of Socrates rather than to Christian Constantinople
That and the several bouts of the plague that ravaged the Mediterranean world during the years that preceded the Islamic expansion.
What a perfect lesson for the USA.
You’re off by 1000 years or so!
Fall of the Persian Empire to Alexander 329 BC
Rise of Islam 629 AD
Ok say off 960 years