When the body is given weakened/dead pathogenic material this helps build up an immune system towards the actual live infection. It prepares the body for the infection so that the person does not get sick.
Farming, stone buildings, quipus, and stone cutting.
The answer to your question is
<span>folkways</span>
Well, for one, Haiti really didn't have anything to offer the United States. No territory. Nothing to trade. Nothing really. But also, the idea of Africans rising up against an oppressive white government and overthrowing them made the United States very nervous, especially since we, at the time, had institutionalized slavery and a culture that was very much steeped in racism. Basically, we were afraid that if we supported the revolution in Haiti, it would encourage our own slaves to revolt against Southern slaveholders.