1228 Year in review
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Further Reading
- 1228 - Wikipedia (wikipedia.org)
- 1228 | History Wiki | Fandom (fandom.com)
- What Happened in 1228 - On This Day (onthisday.com)
- Historical Events in 1228 - On This Day (onthisday.com)
- Year 1228, Overview [Catholic-Hierarchy] (catholic-hierarchy.org)
- THE SIXTH CRUSADE (1228–1229) | by Chronicles of Islamic His (medium.com)
- Sixth Crusade (1228 – 1229) - English History - EnglishHistory.net (englishhistory.net)
- Frederick II, Holy Roman Emperor - Wikipedia (wikipedia.org)
- 1228 Events - Cornell Cooperative Extension Plus Other Program (cornell.edu)