1) The most permanent type of business organization is a Corporation.
It is a company or group of people or an organisation authorized to act as
a single entity (legally a person) and recognized as such in law.
2) Quasi-contracts are based on the theory of Equity. A quasi-contract is a
fictional contract that was created by courts to promote equitable
treatment. It is not an actual, legally-binding document, but instead a legal
substitute for a contract that is formed to impose equity between two
distinct parties.
3) The object of the contract must be lawful.. The object of a contract must
be lawful when the contract is made, and possible and ascertainable by
the time the contract is to be performed.