Treaty of St Germain 1919 - Austria
Separated Austria from Hungary and forbidden to unite with Germany.
Confirmed Austria no-longer a leading power.
Territories made new states of Czechoslovakia and Yugoslavia.

Treaty of Trianon 1920 - Hungary
Lost much of population and territories to Romania, Czechoslovakia and Yugoslavia.
Industry suffered greatly.

Treaty of Neuilly 1919 - Bulgaria
Treaty less harshly (small part).
Lost land to Greece, Romania and Yugoslavia.
Lost access to the Mediterranean.

Treaty of Serves 1920 - Turkey
Lost control of straights running to Black Sea.
Lost land to Greece and mandates. Countries from former empire taken away e.g. Egypt - Independent or Mandated.