Let me make one thing very, very clear for all you hate filled cretins out there: The Lwa of Vodou are not "The Devil™" of Christianity and Islam. Sorry, that dog doesn't hunt.
Oh, yes, any deity, demigod, helping spirit, angel, etc. that you don't recognize is "The Devil™" in your book, but the fact that you say it just doesn't make it so. I get so damn sick of your narrow little binary thinking that I want to puke. Hell, some of you shitheads see even the Catholic saints as "Demons™". I say you are all so full of shit your eyes are brown.
It is a matter of argument whether the lwa are gods, demigods, helpful spirits, "angels", or what. I will leave that to the Vodou practitioners to declare. But from what I've seen, Vodou is pretty damn Catholic, to the point of making me not want to practice it.
So a bunch of revolutionaries praying to God and the lwa before fighting for their freedom from brutal slavemasters is not a "Pact with The Devil™", I don't care how you try to spin it.
The reason Haiti is so poor? The fucking French made them pay REPARATIONS for having dared to win their freedom from brutal slaveowners. They won, and the fucking French extorted reparations for over a century. Between that and US shenanigans because southern bigots were afraid of a free black nation near our borders (afraid that our own black slaves and/or lower class might get ideas), they've been robbed blind.
The only "devil" involved in Haiti's poverty has been white.