According to Albert Barnes, their mistake was that they didn't speak against slavery. Although many of them believed that slavery was against god and against the idea that god made everyone equal, they didn't do much against it out of many reasons, either they thought it was a necessary evil or they were afraid of the public reaction.
The French and Indian War began in 1754 and ended with the Treaty of Paris in 1763. The Great Britain gained territories in the North American, but disputes about policies and paying war's expenses led to colonial discontent. Taxation was created to pay back the debts. Stamp Act, Tea Act and Townsend Act were introduced. This ultimately led to the American Revolution.
The compaign methods from that year was also noteworthy for the intense personal attacks widely employed by the supporters of both candidates
Freed slaves would go to Saint Domingue which is now known as Haiti. <span />
Looo it up on socratic hope this helps