A whole race of people were being killed because colonists and explorers wanted their land.
I do not have your choices of "the following" Here are some reasons I learned: Christianity, empire was too big and became hard to manage, there were many nonromans attacking parts of empire- Goths, the emperors themselves were weak or insane intrigue was rampant.
Answer:
3, there is very little oxegyn :)
Explanation:
please give me brainliest this took me a long time to figure out :)
