How did the size
of the Roman empire changed over time?

Explanation:

the Roman Empire reached its greatest size under the region of trajan in 117 AD.to Aid in administration, it was divided into provinces.the number of students has changed over time as territories were gained or lost, and as larger provinces were divided into smaller ones.

a. european colonies

answer(c) carved on a babylonian clay tablet that showed earth as a flat circular disk;