When did Persia fall?

Answer 1

Persia, as a historical empire, fell in several stages, with the most significant event being the conquest by Alexander the great in 330 BCE, which marked the end of the Achaemenid Empire. Later, the Sassanian Empire, the last pre-Islamic Persian empire, fell to the Arab Muslim conquests in 651 CE. This led to the gradual decline of Persian political power, although Persian culture and influence persisted through subsequent Islamic empires.