Good idea.
Perhaps Caesar44 is not a native English speaker, in which case the confusion regarding 'nation' may be completely understandable.
The English word 'nation' comes from the Latin 'natio', which usually means a people or tribe. But the modern English word nation more commonly refers to a 'nation-state', that is to say, a sovereign political entity.
If we define it as the latter, then clearly, there was no sovereign Jewish 'state' after the Roman conquest and the destruction of the Temple.
If we define it as the former, then clearly, there are many peoples and tribes, in addition to the Jews, who survived the Roman conquest. The Jews also retained their distinctive religion (although as Pindar noted it went through some important changes after 70 CE), which was unusual. But alongside the Jews we could also place the Greeks, Arabs, various Slavic and Germanic tribes, etc.
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