How exactly did the Sassanids fall to the Arabs?

>>3124996
They had just finished a 3-decade war with the Byzantines, so they were broke and their military was in shambles. That and Khalid ibn Walid was an amazing general.

https://en.wikipedia.org/wiki/Byzantine%E2%80%93Sasanian_War_of_602%E2%80%93628

>>3124996
I hate Iran now why couldn't they just submit to justinian and stop islam.

>>3125010

While this is true, there is a greater underlying reason for the fall of the Sassanids -- the refusal of the Parthian families to support the Sassanians in 1) defeating the Byzantines under Khosrau II and 2) defeating the Arabs.

Contrary to popular belief, the Sasanians ruled their realm by what we have termed the Sasanian-Parthian confederacy. This was a predominantly decentralized, and dynastic system of government.

had it not been for the Parthian withdrawal from the Sasanian-Parthian confederacy toward the end of the rul of Khosrau II, the Byzantines might very well have become a client state of the Sasanians. The Persians were knocking on Constantinople's door. The Byzantines were set on changing the capital to Carthage, and even Heraclius remained pessimistic of defeating the Sassanids, until the Persian-Pahlav confederacy began to crack.

After 628, with peace signed with the Byzantines, the Sassanians fell into decades of civil war, with great generals from Parthian clans waging war against the Sassanids. The two factions, engrossed in their strife in promoting their own candidates to the throne, were incapable of putting up a united defense against the encroaching Arab armies. The subsequent conquest of the Iranian plateau, moreover, was ultimately successful because powerful Parthian dynastic families abandoned the last Sasanian king, Yazdgerd III, withdrew their support from Sassanian kingship, and made peace with the Arab armies.

>>3125020

Justinian was a little bitch. The Byzantines should have submited to the Sassanids.

File: blocks yemeni human rights.jpg (16KB, 310x233px) Image search: [Google]

16KB, 310x233px

>>3124996
https://en.wikipedia.org/wiki/Plague_of_Justinian
>The Plague of Justinian (541–542) was a pandemic that afflicted the Eastern Roman (Byzantine) Empire, especially its capital Constantinople, the Sassanid Empire, and port cities around the entire Mediterranean Sea.[1] One of the deadliest plagues in history, this devastating pandemic resulted in the deaths of an estimated 25 million (at the time of the initial outbreak that was at least 13% of the world's population) to 50 million people (in two centuries of recurrence).[2][3]
the filthy (F)ersians should have washed their hands after wiping their asses with them instead of eating their shitty kebab

>>3124996
They feared the Arab warrior a little too much just like the Romans

Because it was Allah's will.