The significance of the Battle at Marathon was that the Persians were defeated. If the Persians had won, we would live in a much different society today.
The best option from the list would be that "<span>b. The United States began to build up its military and to stockpile weapons," since this was part of the inevitable "Arms Race" that took place between the US and the USSR. </span>
Answer: he wanted the city to reflect his power
Explanation: