The first diaspora of the jews followed and was caused by

The Jewish proper diaspora began with the Babylonian exile in the 6th century BCE.

Explanation:

In 722 BCE, the Assyrians, under Sargon II, successor to Shalmaneser V, conquered the Kingdom of Israel, and many Israelites were deported to Mesopotamia. The Jewish proper diaspora began with the Babylonian exile in the 6th century BCE.

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