In 1985, an additional burden was placed on the mexican economy by

The fill in the blank answer is The 1985 Mexico City Earthquake.

While under increasing economic pressure the capital and largest city of the country, Mexico city was struct by a large scale with a moment magnitude of 8.0

Aftershocks caused further damage, overall injuring 30,000 and killing approx. 20,000 people.

Buildings and infrastructure collapsed with the cost of the earthquake reaching into tens of billions of dollars to the Mexican economy.