Final answer:
The Inter-American Defense Board Medal was authorized in 1942 to recognize meritorious service and acts of valor within the Inter-American Defense Board and its subordinate organizations.
Step-by-step explanation:
The Inter-American Defense Board Medal was authorized in 1942. The Inter-American Defense Board (IADB) is an organization that promotes defense cooperation among the nations of the Americas. The medal was established to recognize meritorious service and acts of valor within the IADB and its subordinate organizations. The Inter-American Defense Board Medal was authorized in 1942 to recognize meritorious service and acts of valor within the Inter-American Defense Board and its subordinate organizations. It is awarded to military personnel who have contributed significantly to the organization's defense efforts.