And of course one reason there are so many dead in Haiti is that agriculture in the countryside was no longer providing a livelihood for Haitian peasants; they moved in the thousands to the capital, they built shanties on the sides of canyons; all gone now.
I won't go over the arguments against globalization for countries like Haiti here. Suffice it to say that Haiti, once the Pearl of the Antilles, once France's most valuable and productive colony, and still into the 19th century at least an important provider of the world's sugar, rum, and coffee, is now a net importer.
If you want to help, Medecins Sans Frontieres (Doctors Without Borders) is already working in Haiti. Recommend this post