Although The Earthquake Did A Great Deal Of Damage, It Was Nothing Like The Disaster Of 9/11., Reference To: _________________________________________

Although the earthquake did a great deal of damage, it was nothing like the disaster of 9/11.

Reference to: ______________________________________________________

Possible meaning: __________________________________________________

  Reference to the 9/11 or September 11 attacks by a terrorist group 18 years ago. (September 11,2001) in the US.

Meaning:
The earthquake caused alot of damage but not as much as the damage the 9/11 attacks caused. Pertains to the fact that the 9/11 attacks caused a huge amount of damage to the country, and because it was so huge, the earthquake seemed incomparable.