The loud sound of a police siren will cause

The loud sound will cause strong vibrations of the endolymph and basilar membrane at the base of the cochlea.
This process will instantly increase our alertness and will put us under fight or Flight State, which will help us assess the situation and choose the appropriate action that would fit to that situation.

The haitian revolution was the result of a long struggle on the part of the slaves in the french colony of st. domingue, but was also propelled by the free mulattoes who had long faced the trials of being denoted as semi-citizens. this revolt was not unique, as there were several rebellions of its kind against the institution of plantation slavery in the caribbean, but the haitian revolution the most successful. this had a great deal to do with the influence of the french revolution, as it to inspire events in haiti. the haitian revolution would go on to serve as a model for those affected by slavery throughout the world.