If you list 'the following' you might get an answer.
darius I darius I
Persian King
No - Darius I was not a Mede, he was Persian. And Persians and Medes were not black, they were Indo-European.
darius used some of persian's great wealth to build roads across the empire
He first got rid of a pretender king Bardiya after King Cambyses died. Then he divided the empire into 20 provinces and established a Persian governor in each, responsible for internal and external security and collection of taxes. These were overseen by the king and his council and supported by the regular army forces. He also levied from the cities and provinces fleets of warships which formed the naval protection for security and trade.
Bribing the aristocracies of the Greek city-states in mainland Greece to accept Persian overlordship.
There were several Persian leaders called Darius - they were kings of Persia.
Darius was a Persian.
darius I darius I
Persian King
Persian King
Under Xerxes I the Persian army captured Athens following the battle of Thermopylae. The Persian king to conquer Athens , was the famous Persian king called Cyrus.
darius used some of persian's great wealth to build roads across the empire
No - Darius I was not a Mede, he was Persian. And Persians and Medes were not black, they were Indo-European.
Who is 'you do'.
Darius and Xerxes.
They were leaders the Persian Empire. Darius was the father of Xerxes. Darius led the Persians in the first Persian war, while Xerxes led the Persians in the second Persian war.