Why did the jews maintained their national identity despite three major attempts at their destruction?

it’s been a matter of priority for the jews to maintain their national identity.

they give the jews their god, their religion, their lifestyle, their land. and it has been a priority since forever for jews around the world, regardless of their native language, to learn hebrew so they can read the scriptures in the original.

might be agreeing to participate ethically with other european nations in the slave trade

or notifying other european nations when taking possession   of african territories

c) they were beaten and fired from their jobs.