The Third estate was treated horribly unfair before the French revolution even though they made up 97% of the population. They were in charge of producing all the food and when they were done over 50% of it got taken way leaving them starving. They were also the only estate in France that paid the heavy taxes making them very poor.
It is the duty of the second estate to collect 50% of the food you have produced
The third estate tried multiple times to be reasonable and attempt to make the voting system by population rather than by the state. But after many failed attempts they snapped and used the Guillotine to kill hundreds of first and second estate members including the king and queen.
Off with his head!!!
During and after the French Revolution many things changed including the ability to vote by population, Equality throughout everyone. The form of government also changed many times but it ended up back at a Dictatorship.
The slaves in St. Dominique had had enough of the unfair treatment and horrible working conditions of being a slave. The slaves wanted their freedom and were going to fight for it.
The Haitians main method in the Haitian revolution was massive battles with lots of casualties. Lead by Toussaint L'Ouverture the Haitian slave army outnumbered the white's 12:1 but lacked training so they were at a disadvantage. Many large battle occurred between the slaves and the white's throughout the Haitian Revolution.
At the end of the Haitian revolution Toussaint L'Overture became the governor for life and established a dictatorship in Haiti. Toussaint and his army had driven out the whites and had the blacks had the country to themselves. Toussaint also made a law to completely abolish slavery in forever in Haiti.