What ideas motivated the abolitionist movement?

The early abolitionists were mainly motivated by religious beliefs. Many were Quakers who, as religious dissenters, were seen as on the fringe of society and even as dangerous fanatics, because of their belief in equality. They were banned from public office and had little direct influence.

I believe it was mainly ideas about religion/religious beliefs.
Hope it helps!

Ibelieve the answer is 1756. 

The role of women in the enlightenment is often debated and frequently overlooked. women during this era were not considered of equal status to men, and much of their work and effort was suppressed.[1] salons, coffeehouses, debating societies, academic competitions and print all became avenues for women to socialize, learn and discuss enlightenment ideas. these avenues furthered their roles in society and created stepping stones for future progress