When a job selection instrument is related to job success, the instrument is said to be valid. This means that this instrument is in a position to produce its expected effects. Therefore, this instrument will provide efficient selection allowing those selected to succeed in employment.
The validity of this instrument also refers to its ability to conform to prevailing precepts, of what may have the expected effects of it.
The answer to this question is, The Marshall Plan. This plan is in which the US gave the European nations 13 Billion dollars so they could rebuild what was lost after the war. I hope this helps you.