Answer:
A new birth of freedom
Explanation:
If we are thinking about <em>slavery,</em> a <em>new birth</em> of <em>freedom</em> would signify the end of slavery.
The others would not make sense, as they are referring to time and various aspects of the physical fighting of the war.
Germany as after WWII the "Iron curtain" was dropped by western Europe in an attempt to staunch communism.
The Odyssey is about Odysseus's 10-year struggle to return home to his wife.
Jesus, the king of the Jewish culture, came to the Roman Empire.