They obtain data of climate in past period through what they refer to as climate proxy. Climate proxy is a natural objects that could be used as an indicator to determine the climate at that time (since the natural object is most likely present at that time). For example, they could determine the past weather in certain area by looking at tree rings.
They helped guard against the possibility of strikes that would slow wartime production.
The correct answer is A) Providing for rule by a single individual in cases of national emergency.
The constitution of Weimar Germany helped to undermine the republican form of government by providing for rule by a single individual in cases of national emergency.
After World War I, the creation of the Weimer Republic seemed to be a decent solution to Germany's problems. It tried to instill some democratic principles and a proper form of government, but it happened differently.
The Great Depression affected Germany. The Weimar Republic lived heavy inflation in the decade of 1920 because Germany had to pay many reparations due to World War 1 and the agreements of the Versailles Pact. The Weimar Republic decided to borrow money from the United States instead of collect more taxes on its citizens. The government cut spending and the interests paid to the US worsened the poor economic situation in Germany. This situation created frustrated and angry people ready to accepts the radical ideas of the Nazi Party and Adolph Hitler.
