How did Speer improve the German war economy?

What evidence is there of Speers success? (5)

Why was Goering a failure?

How did Fritz Todt try to improve difficulties?

What were the failures of the war economy?

How did Hitler try to improve the German war economy during the early parts of the war?

What evidence is there to show that in the early years the German war economy was still weak?

Who did Hitler appoint as the new Minister of Munitions?

Why was the German economy weak in the early part of the war?