I think the answer would be a
One of the main reason why more people didn't foresee the economic collapse of the 1930s is because it happened so quickly with no warning, since the US economy during the 1920s was incredibly strong and showed no signs of slowing.
Answer:
c. reduced unemployment by increasing the German military.
Explanation:
After his taking power in 1933, Adolf Hitler promoted aggressive domestic and foreign policies. Enlarging the army to levels not allowed, producing forbidden systems of weapons such as tanks and aircraft, remilitarizing the Rhine were measures taken by Nazi Germany that violated the contents of the Treaty of Versailles, the 1919 peace treaty that formally put an end to the First World War and had imposed severe limitations and war reparations on Germany.