What are the doctrine of spiritism?

According to Allan Kardec, spiritism is a belief in the existence of spirits--non-physical beings that live in the invisible or spirit world.

A doctrine is a teaching related to how to behave.

A principle or body of principles presented for acceptance or belief, as by a religious, political, scientific, or philosophic group; dogma. A rule or principle of law, especially when established by...

A statement of official government policy, especially in foreign affairs and military strategy.

Both Doctrines offered economic and military aid to countries.