Final answer:
In 1775, the first antislavery society in the world was established in Philadelphia, Pennsylvania by the Quakers, contributing to the growing abolitionist movement influenced by various factors.
Explanation:
In 1775, the world's first antislavery society was formed in Philadelphia, Pennsylvania by the Quakers, a pacifist Christian sect known as the Society of Friends. This society was a pioneer in advocating for the abolition of slavery.
The influence of the British Abolition Society, formed in 1787, and prominent abolitionists like Wilberforce and Clarkson, along with the French Assembly's proclamation of the Rights of Man, fueled the antislavery movement in America.
Similar organizations soon emerged in northern states, attracting many renowned individuals who supported the cause of abolition.
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