Persian Invasion

Iranian Invasion: -

516 BC Iran is invaded by the Achaemenid dynasty kings. Which included King Darais who conquered the territories of Punjab, Sindh and Gandhara. The region was the 20th out of 28 provinces conquered by Iran. The state accounted for one-third of Iran's revenue.
Xerxes then defeated the Greeks with the help of the Indian army.
The Iranian historian Herodotus also described the invasion. Herodotus is called the father of history.
Kharoshthi script and Iranian sculpture entered India with the Iranian invasion