I know for sure Russia, I believe Poland...
Answer:
( b ) because they were so advance people also wanted to get the latest version to give them less pain
C makes the most sense to me
Answer:
The Roman and Byzantine systems had problems whenever they had a run of several bad or weak Emperors in a row, and the Western Empire had such a run in the fifth century. It could survive the fifth century with better leadership and being able to tax the large landowners.
