Final answer:
Germany under Kaiser Wilhelm II was a constitutional monarchy with aggressive foreign policies leading to WWI, and defeat in the war led to the Kaiser's abdication and provided a foundation for future political extremism.
Step-by-step explanation:
Under Kaiser Wilhelm II, Germany became a constitutional monarchy following the unification of various smaller states. The political system allowed men over the age of 25 to vote for the Reichstag, though considerable power rested with the unelected federal council and the Kaiser, complicating the democratic ideals of the time. During Kaiser Wilhelm's rule, Germany pursued aggressive foreign policies, clashed with other European powers, and contributed to tensions that led to World War I.
Moreover, the defeat in World War I and the subsequent 'stab-in-the-back' myth fueled by the Kaiser and military generals laid groundwork for future political unrest, which ultimately led to the abdication of Kaiser Wilhelm II and the rise of extremism.
Germany's aim to become a Great Power paralleled those of Britain and France, with nationalistic ambitions leading to aggressive stances and colonial aspirations. Wilhelm II's engagement in the Moroccan Crisis challenged France and Britain in North Africa, asserting Germany's desire for equal trading benefits. These stances fueled by the Kaiser's apprehensions about encirclement by hostile nations added tension to the already volatile European political landscape.