Which factors led to the Islamic conquest of Iran?


A. The Parsees formed an alliance with the Muslims because of years of persecution under Persian rule.


B. The Sasanian King Chosroes II married the granddaughter of Muhammad which led to a merger between the two groups.


C. Sasanian Persia was in a state of decline caused in part by years of warfare with Byzantium.


D. Most Iranians practiced Zoroastrianism, a peaceful religion; therefore, they refused to engage in battle with the Muslims.

Now I answered the one about Charles Martel and the Islamic attack from Spain. You make a guess at this one. Which do you think? Which seems most likely?

Sasanian persia was

To determine the factors that led to the Islamic conquest of Iran, we need to evaluate the options provided:

A. The Parsees formed an alliance with the Muslims because of years of persecution under Persian rule.
This option suggests that the Parsees, followers of Zoroastrianism, allied with the Muslims due to their mistreatment under Persian rule. However, this statement is not historically accurate, as the Parsees did not form such an alliance during the Islamic conquest.

B. The Sasanian King Chosroes II married the granddaughter of Muhammad which led to a merger between the two groups.
This option suggests that a marriage alliance between the Sasanian King Chosroes II and the granddaughter of Muhammad resulted in a merger between the Muslims and the Persians. However, this statement is also not historically accurate, as there is no evidence to support the claim of such a marriage alliance.

C. Sasanian Persia was in a state of decline caused in part by years of warfare with Byzantium.
This option suggests that the decline of Sasanian Persia, which was engaged in prolonged warfare with the Byzantine Empire, played a significant role in the conquest by the Islamic forces. This statement is historically accurate; the weakened state of the Sasanian Empire made it more vulnerable to conquest.

D. Most Iranians practiced Zoroastrianism, a peaceful religion; therefore, they refused to engage in battle with the Muslims.
This option suggests that the predominant practice of Zoroastrianism among Iranians led to their refusal to engage in battle with the Muslims due to the peaceful nature of their religion. However, this statement is not historically accurate as many Iranians did resist the Islamic conquest, although the peaceful nature of Zoroastrianism may have influenced some individuals' responses.

Based on the above evaluation, the correct option that accurately explains a factor leading to the Islamic conquest of Iran is:

C. Sasanian Persia was in a state of decline caused in part by years of warfare with Byzantium.