Answer:
There was already a deep racial divide among Polish citizens.
Explanation:
The United States rejected the Treaty of Versailles, because a big portion of Americans were against the League of Nations and wanted reservations or amendments on the treaty. Some Americans of Irish and German origin felt the treaty favored the British and there was a sort of general opposition to the treaty for a variety of different reasons.
Germany
Austria
Japan
those are some countries that were destroyed and rebuilt