The EU has introduced a set of rules of private international law for contractual and non-contractual obligations in civil and commercial matters.
The EU has introduced two regulations which apply to all EU countries except Denmark:
Rome I: EU regulation on the law applicable to contractual obligations.
Rome II: EU regulation on the law applicable to non-contractual obligations.
Practical information on EU and national law and procedures, including applicable law, has been made available by the European Judicial Network in civil and commercial matters https://e-justice.europa.eu/ejncivil.