I did a little research and it looks like the answer is A.
<span>Etruscans is a group of Indo-European settlers which eventually influenced the early development of Rome.</span>
Women gained acceptance as battlefield nurses during the Civil War due to the sheer need for people to help. So many men were out fighting and dying that the usual decorum of "where a woman's place was" became secondary to the needs of the cause of both the Union and Confederacy. Women initially were not allowed on the battlefield, but only to help at hospitals away from the lines. As the war waged on and the need rose, anyone with any kind of training was plunged into service anywhere it was needed.
Answer:
D. Gupta and Maurya
Explanation:
The Maurya and Gupta Empires (article) | Khan Academy.
P/p=factors
thats the equation thats responsible for the growth.