Answer: A. Large earthquakes offshore of Portugal.
Explanation:
Large earthquakes in coastal areas can cause tsunamis, an example of which being the boxer day tsunami in 2004.
Because modern civilization had accomplish that
It created jobs for the US and increased employment and incomes as well and also lowered prices
Many rural, and country areas. That is why cities like New York City, Dubai, Shanghai have a high population density. They are cities not rural and country area. Hope this helps!
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