It only appeared to be so. The roaring twenties was soon followed by the Great Depression, I believe, and lots of people suffered during that time.
The fall of Ancient Rome started from about AD 190. The Roman Empire was attacked by tribes such as the Goths and the Vandals. Civil wars in parts of the empire further weakened the rule of Rome and respect for Roman law dwindled as a result.
Answer:
My answer is all of the above
Diaspora, the dispersion of jews beyond israel.
