Who was the leader of the Germans during WWII​

Why was the battle of gaugamela an important turning point in alexanders conquest of persians empire

How did industrial production improvements impact export-dependent areas of the world during the great depression?   a.  demand for certain raw materials rose.      b.  demand for certain raw materials fell.      c.  the new technology was exported to most raw material producing nations.      d.  there was a decrease in tariffs.

How does iraqs geographical location ( desert-like environment ) affect it's politcal relationships? i've been stuck on this and i'm giving a lot of points