Americans wanted to spread democracy and expand across the united states. what was this called?

This was called Manifest Destiny.
During the 19th century, America thought it was its destiny to spread all over the continent, take everything away from Native Americans and spread its democratic views to everyone else because it was 'the right thing to do.' 

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.