I want to know the answer to the following question:
Who took over the territory and made it part of their empire?
All the background I'm provided with is that "Some authors have also suggested that in the 7th and 6th century BCE parts of modern Tajikistan, including territories in the Zeravshan valley, formed part of Kambojas before it became part of the Achaemenid Empire.". Is that enough to answer the question?