Final answer:
People who helped end slavery included Quakers, revolutionaries, and abolitionists like John Woolman, Anthony Benezet, James Otis, Henry Clay, Abraham Lincoln, David Walker, Frederick Douglass, Nat Turner, and Sojourner Truth, as well as international influences like Great Britain on Brazil.
Step-by-step explanation:
The people who helped end slavery were diverse and championed the cause in various ways. This struggle against slavery included Quakers like John Woolman and Anthony Benezet, who believed slavery was a sin. Secular activists like James Otis connected the fight for independence with the need to end slavery. During the Revolutionary era, certain states started enacting emancipation laws, while individuals like Dr. Benjamin Rush founded societies such as the Pennsylvania Abolition Society to pursue the gradual abolition of slavery. Even after the Revolution, the movement evolved with prominent figures such as Henry Clay and Abraham Lincoln who endorsed colonization or 'repatriation' approaches.
As abolitionism gained momentum in the antebellum period, different groups and notable abolitionists including David Walker, Frederick Douglass, Nat Turner, and Sojourner Truth advanced the cause using their voices and the power of their words. They argued for the immediate end of slavery and the recognition of the humanity of black people. Furthermore, international efforts also played a role, as seen in Great Britain's influence on the abolition of the slave trade and slavery in Brazil. Ultimately, the collective efforts of these individuals and groups, with varying strategies and ideologies, contributed to the abolition of an institution that stood in stark contrast to the growing ideals of human rights and equality in the modern world.