An earthquake is an externality that affects the economy. Any country in the world, which depends on tourism and trade, when a disaster of this nature comes, out of the market for a while, the losses are substantial, the economic recovery can be fast or slow, according to the damage it has suffered.
.Do I make you this example.
An earthquake from the San Andreas fault, it can create unprecedented damages in the State of California, The cities of San Diego, Los Angeles, San Francisco, destroyed dams, aqueducts, roads, railways, water treatment plants of water, nothing works. That is a negative effect, the economics of this region, collapse.