Answer: D.
the struggle between the Pandavas and Kauravas in India
Explanation:
I just did it on Study Island! :) Hope this helps you!!!!
The transcontinental railroad let the settlers go to the western side of America. With that they needed more farms for food and resources to provide a profit. The settlers did not want to do the work to they forced slaves to work for them. The settlers in the west made slavery increase due to the wanted of profit and the needing to survive.
Colonies can provide new goods to the mainland, this bringing in more money
The different environmental sections of the Incan Empire treated with each other.
Hopes this helps
