Answer:
I think it's necessary because people acquire the needs that they you don't have like for example your friend has a banana and you have a mango your friend wants that mango and you want that banana so you will trade each of your goods to each other and you will acquirewhat you wanted
I dont know for sure but i think its B-<span>The empire's boarders were expanded.</span>
Answer:
total distance over total time
Explanation:
Is one of the answers Political?