Oblige (verb)

1. To do a favor or service for (someone); to comply with a request or a demand.
2. To force (someone) by law or authority to do something.

Origin:

From old french obliger, from latin obligare "to bind, oblige".

Examples:

1. He obliged her by giving her a ride home.
2. She obliged him by lending him the money.
3. I would be happy to oblige your request.
4. The company was obliged to pay a fine for breaking the law.
5. The court obliged the defendant to pay restitution to the victim.