This is strictly my opinion but I believe it was a failure. It's original goal was the revitalize the American economy and pull us out of the Great Depression and get American's working again. In this it succeeded to an extent lowering the unemployment rate significantly however it still did not completely work since 15% of the United State's population was still jobless and in poverty. It won't be until WWII and the building of the arms industry as well as army that we will pull ourselves from the Great Depression.
They had problems with trade because of the unstable government so they couldnt make "money" as easily
Neither one of the sides were fruitful in getting through the resistance of the other and bringing about a stalemate. Trench fighting developed due the disappointment of the Schliffen Plan. It was another arrangement of fighting which was an immediate reason for the stalemate, and this is the reason. It was an arrangement of resistance not offense.
Provided a useful way to turn iron into steel, British manufacturer who the Bessemer Process was named.