I believe the answer is: The laws and traditions lived on, flourishing through the Byzantines who lived in the East.
The Byzantinne was the once a part of The territory of the Roman empire on its eastern front. During the peak of it's glory, the Byzantinne empire adopt the majority of laws and tradition of the roman empire, which make many historians see them as a fragments of the roman empire.
the answer to your question is a) they had advanced planning and developed effective military methods.
Answer:
The people in ancient times travel from place to place in search of food and shelter before the cultivation of agriculture and settled life man was depended on wild animals and fruits for food so they used to travelle from one place to onother , besides in safe from harsh climate he used to travelle from one place to onother place
Supreme Power or Authority.
Probably a lot more rights