The term conflict of laws itself originates from situations where the ultimate outcome of a legal dispute depended upon which law applied, and the common law court's manner of resolving the conflict between those laws. In civil law, lawyers and legal scholars refer to conflict of laws as private international law. Private international law has no real connection with public international law, and is instead a feature of local law which varies from country to country.
The three branches of conflict of laws are:
Jurisdiction – whether the forum court has the power to resolve the dispute at hand
Choice of law – the law which is being applied to resolve the dispute
Foreign judgments – the ability to recognize and enforce a judgment from an external forum within the jurisdiction of the adjudicating forum.
it is sometimes against government policies.