Following WW1 came the Treaty of Versailles it ordered Germany to pay reparations to the UK and France, these wouldve taken up to the present day to repay and at the time was sucking the life of the German economy. Gustav Stresserman, the German Chancellor (Prime Minister) appealed to the US for aid and so Owen Young a US industrialist set up a loan system whereby the US (through JP Morgan Bank) loaned to Germany. This was to benefit the US as when Germany paid back the UK & France, the UK & France paid back loans they owed to the US all the while the US were gaining interest off all three nations and getting free exports to the countries. Its quite a complex deal but it all came crashing down with Wall Street in 1929. Had the plan succeeded and there never be a WW2, Germany would be paying back reparations up until 1988!
I did the Young plan's impact on German society for a history project over here in Ireland so my info is all accurate :)
Hope I helped and please rate my answer :)
