All of the above. Haiti is located near a major fault zone, half of its population at the time lived in densely populated urban areas; their weak government, which is a remnant of colonial impact, is very poor for the same reason and therefore did not have buildings up to code regarding earthquakes.
Not sure about poor soil but it probably didn't help if that is true. Islands aren't exactly famous for a lot of quality soil (large amount of sand which is unstable).
<span>Fritz Heider concluded that people tend to attribute others' behavior either to their </span>dispositions or their situations.
In other words, Heider suggested that people believe that others make decisions based off of circumstances and innate personality.
The niles river supported them
