Try looking up Bar-Kokhba's history (also known as Simon Ben Kosiba before he changed his name). I know he led a revolt agailnst the Romans a little before the Diaspora. He lived during c. 132...
This question can only be answered with opinions. My opinion is that because the Jews had no homeland, they were especially vulnerable to attacks and persecution.
The term: diaspora (in Ancient Greek, διασπορά – "a scattering or sowing of seeds") is used (without capitalization) to refer to any people or ethnic population who are forced or induced to...