Which of the following was NOT connected with Germany in the years 1918-1920?

Which of the following was NOT connected with Germany in the years 1918-1920?
 
  a. The navy mutinied, insubordination among soldiers grew, and the German High Command directly contributed to the establishment of the Republic.
  b. Though the Armistice was signed two days after the Kaiser's abdication, the Republic did not bear sole responsibility for the Armistice and the Treaty of Versailles.
  c. The Republic survived the Spartacist revolt led by the communists Rosa Luxemburg and Karl Liebknecht.
  d. The Republic successfully blocked plans by the military to continue the war.
  e. The Free Corps, used to suppress the Spartacists, attempted to overthrow the government in the unsuccessful Knapp Putsch of 1920.