It could be a variety of answers some examples could be something relating to the technology, or the advancements of this time period. Anything relating to that would be fine!
B. <u>"a collection of tribes who began crossing the Hindu Kush into India in 1500 BCE"</u>
Answer:
Alexander the Great did not conquer India
Hope this helps :)
The answer is Perspectives, they taught themselves about different perspectives to help them put depth into their artwork.