The act is governed by the law of the place where it is done.

Explanation

The validity and effect of a legal act are determined by the law of the jurisdiction where the act occurs — a contract made in one state is governed by that state’s law as to its form and execution.

Where this applies

• A contract is signed in one state but someone wants it governed by another state's law.
• A marriage performed in one country is challenged under the laws of another.