Editing Darius the Great (section)

===Invasion of the Indus Valley===
[[File:Eastern border of the Achaemenid Empire.jpg|thumb|Eastern border of the [[Achaemenid Empire]]]]
{{Main|Achaemenid invasion of the Indus Valley}}
In 516 BCE, Darius embarked on a campaign to Central Asia, [[Ariana|Aria]] and [[Bactria]] and then marched into [[Afghanistan]] to [[Taxila (satrapy)|Taxila]] in modern-day [[Pakistan]]. Darius spent the winter of 516–515 BCE in [[Gandhara]], preparing to conquer the [[Indus River|Indus Valley]]. Darius conquered the lands surrounding the Indus River in 515 BCE. Darius I controlled the [[Indus River|Indus Valley]] from [[Gandhara]] to modern [[Karachi]] and appointed the Greek [[Scylax of Caryanda]] to explore the Indian Ocean from the mouth of the [[Indus]] to [[Suez]]. Darius then marched through the [[Bolan Pass]] and returned through [[Arachosia]] and [[Drangiana]] back to [[Persia]].