The trick is figuring out where the manufacturing is. Electric components like batteries and motors are usually imported, that can’t be helped. Mechanical parts and assembly are often done in Europe.
And even more are somewhere in between - for example frames from China, assembly in Europe.
Quite a few. This is a list of bicycle manufacturers, there’s a country next to each one. These days most make electric models.
https://en.wikipedia.org/wiki/List_of_bicycle_brands_and_manufacturing_companies
The trick is figuring out where the manufacturing is. Electric components like batteries and motors are usually imported, that can’t be helped. Mechanical parts and assembly are often done in Europe. And even more are somewhere in between - for example frames from China, assembly in Europe.