How do you think the Romans expanded their territory and consolidated and maintained their power?

name two ways organisms join a population and two ways organisms leave a population. two ways organisms join a population are birth rate and immigration. two ways they leave are death rate and emigration.

explanation:

this is not a question its simply asking you to read and write a few sentences and   the question on the bottom its fairly easy, you can do this!

this isn't a question and if you're going to list things be kind and use commas.