Hello, Im an Australian Citizen looking to apply for a Polish ancestry passport.
My grandmother was born in Poland Kalwaria Paclawska in 1927, she then became an Australian citizen in 1950.

When my grandmother became an Australian citizen, it is possible that she gave up her rights for Polish citizenship, If this was the case would I still be eligable to apply for Polish citizenship?

I have an original copy of her birth certificate, what other documents would I need?

If Im successful becoming a Polish citizen, being an Australian citizen as well would that make me part of the European Union with my Polish passport ?

If anyone can help me on this topic it would be greatly appreciated

Cheers
rach