Simplify the following text for a Grade 11 native English-speaking person.
Original: After the end of World War I , the Central Powers ' surrender to the Western Allies , the chaos of the Russian Revolution and the Treaty of Versailles finally allowed and helped the restoration of Poland 's full independence after 123 years .
Simplified: It would take the World War I , with the Central Powers losing to the Western Allies , the chaos of the Russian Revolution and the Treaty of Versailles to restore Poland 's independence after 123 years .