The Sassanid Empire was dismantled by which empire?

The Sassanid Empire, the last pre-Islamic Persian empire, was decisively defeated and ultimately dismantled by the Rashidun Caliphate during the Muslim conquest of Persia in the 7th century CE. This marked a significant turning point in history, leading to the Islamization of Persia.

• Rashidun Caliphate (Correct): The Rashidun Caliphate launched a series of successful military campaigns that led to the collapse of the Sassanid Empire.
• Roman Empire (False): The Roman Empire (and later Byzantine Empire) was a long-standing rival of the Sassanids, but it did not dismantle them.
• Mongol Empire (False): The Mongol Empire emerged much later, in the 13th century, and conquered the Abbasid Caliphate, not the Sassanids.
• Ottoman Empire (False): The Ottoman Empire also arose much later, in the 14th century, and was a successor to various Turkic states, not involved in the Sassanid collapse.