The answer is D I hope this helps
All of the answers are correct so you should select D: All of the above
Answer:
Explanation:competition. A common demand by two or more organisms upon a limited supply of a resource; for example, food, water, light, space, mates, nesting sites. ...
coevolution. ...
ecological niche. ...
mutualism. ...
predation. ...
parasitism. ...
Realized niche. ...
Fundamental niche.
It was actually a city state at first, Through conquest, trade deals, and luck/resources. They were able to become an empire. Also reorganization of the Roman Legion helped.
