Officials were transferred frequently so that they had minimal social and political connection with the public.
I think is yes because if they never occurred than no one would discovered or have those things they will have to try to make them by themselves
Answer:
abacus
Explanation:
Focus On. There is a long history detailing the invention of computing and calculating machines. The earliest recorded calculating device is the abacus. Used as a simple computing device for performing arithmetic, the abacus most likely appeared first in Babylonia (now Iraq) over 5000 years ago.
It has to be A because once the byzantine Romans fell and the complete destruction of Rome happend all of the European empires rose but Mongolian and other tribes helped with the destruction as well I'll go with A
