The Treaty of Versailles, which effectively ended World War I, required Germany to "pay reparations"--which were very harsh and actually led to the outbreak of World War II.
He is important to Canada for protecting them from the initial American Invasion.
The political situation following the decline of the Roman Empire was not particularly envy-inducing. The reason for this was that Europe had no centralized government and with that there were a mixture of tribes where each fought for their right to rule over the best areas in Europe - D.
Germany prompted the United States to join World War I because of it's violation of the pledge for unrestricted submarine warfare in the North Atlantic Ocean and Mediterranean Sea, as well as enticing Mexico to turn against the United States. I hope this helps :)
To isolate them from the general population, Jews in Hitler's Germany were required to wear a yellow star which said "Jew" on it, so that they could be distinguished everywhere they went and they were more easily deported. This also happened in other countries in Europe during this time.