Your question seems to be a bit muddled. "Horse latitudes" are associated with the "Subtropical High Pressure" system.
You wrote the first two words of your answer already!
Answer:
<em>The focus is the place inside Earth's crust where an earthquake originates. The point on the Earth's surface directly above the focus is the epicenter.</em>
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I would think population density
The farther up you go the more light is absorbed at higher altitudes compared to the lower stratosphere<span>, so the </span>temperature increases
Some of the worlds fastest growing cities include NYC (New York City), Tokyo, Hong Kong, and Mexico City but, there are a ton more.