Which of the following actions by darius strengthened the persian empire by encouraging trade select all that apply (2 answers)

a) encouraged use of coins
b) set up express mail delivery
c)set up common weights and measures
d) expanded the barter economy

I think the correct answers from the choices listed above are options A and C. The actions done by Darius that strengthened the Persian empire would be encouraging use of coins and setting up common weights and measures. Hope this answers the question.

climatic conditions were not suitable for agriculture . The crops dried because of very hot weather there. ... So it was very difficult to live in Great plains

Explanation:

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