Answer: its b
Explanation: The bacterium that causes the bubonic plague is called yersinia pestis. It can survive in rodent populations and is spread to other mammals, including humans, through flea bites. ... The 1330s outbreak also spread west across Central Asia via traders using the Silk Road.
Arguably the most significant reason why the Weimar Republic failed was the onset of the Great Depression. The economic collapse of 1929 had dire effects on Germany. By 1932, two-fifths of the German workforce or some six million people were without a job
Economic, political and social.
Instability was from the Treaty of Versailles left many countries bitter for they did not get fully compensated for the war. Germany, especially, experienced economic and political issues bc they had to be a republic and pay billions in reparations. Russia was faced with a revolution and struggled with famine and inflation. Europe was faced with even more instability after the stock market crash of 1930.
