Did it ever have one?
Up until recently, Europeans were killing each other on massive scale. It is hard to form an identity under such circumstances.
actually, Vik------wars sometimes create identity. They create
"nationalism"
She is talking about unified European identity. That was not possible because less than 100 years ago, they were busy killing each other. Those nations that fought each other ended up re-enforcing their respective national identities while weakening the European identity.