The answer is a. necessary and proper. (i'm not positive that that's correct but that's what i would put.
The Pax Romana was in Greece made by Augustus ceiser Julius Ceisers son and it went on all the way till Augustus died it ment the peace times of when Augustus was one of the best emperors of all time.
1. malaria 2. rivers had terrible waterfalls..too dangerous...until the steam engine was invented it was incredibly dangerous 3. deserts....they didn't know how to travel through the deserts and find an oasis which made it very difficult to travel through
To set a base collection of laws
