The Number of Cities of the Top 20 Largest Cities World Wide Which Are Situated Upon a Fault Line, the Economic Value of Tourism Within California, United States of American Annually, the Economic Value Generated Annually Within California Due to the San Andreas Fault and the Reason for This, the Frequency of and Total Economic Cost of a Large Earthquake Within California and the Reason the California State Government Continues to Expand California, the Deepest Underground Tunnel in the World, the Reason Scientists Understand a Large Earthquake Will Occur Within Istanbul, Türkiye During the 21st Century, the Reason the Marmaray Tunnel Will Remain Unaffected When a Future Earthquake Occurs Within Istanbul, the Volume of Istanbul Which Will Be Destroyed During the Next Large Earthquake, the Reason Hagia Sophia is One of the Oldest and the Newest Architectural Complexes Within Istanbul, the Reason Hagia Sophia is Expected to Survive the Next Large Earthquake But Much of Istanbul’s Architecture is Not, and the Benefit of Much of Istanbul’s Architecture Collapsing During the Next Large Earthquake Within Istanbul