The Tappen brothers and William Lloyd Garrison
Northern abolitionists.
Most of the abolitionists supported the Underground Railroad because most of the abolitionists wanted to end slavery.
abolitionists
Not all abolitionists supported the Underground Railroad, as opinions varied within the movement. Some abolitionists believed that the Underground Railroad placed too much emphasis on individual acts of resistance rather than systemic change, while others were concerned about the legal ramifications and risks involved. Additionally, some abolitionists focused on political solutions, such as lobbying for legislation, rather than direct action. Therefore, while many supported the Underground Railroad as a means to aid enslaved people, not all felt it aligned with their strategies or beliefs.
New England, especially Massachusetts
Abolitionists
the news paper
A way the south fought against abolitionists attacks was by claiming that slavery was supported by the Bible and wisdom of Aristotle ...got this from the American pageant book
The South supported it because it could have allowed new slave-states. The Northern abolitionists opposed it for the same reason.
You really need to be more specific than "organization", because both the USA and CSA governments were organizations who supported the war. The anti-abolitionists also supported the war because they didn't the north to tell them how to run their businesses, while the abolitionists supported the war out of civic duty. Without telling what type of group you are talking about, or any of the reasons why they supported the war, it is impossible to answer the question accurately.
Because abolitionists are fighting for abolitionism which is the movement to end slavery. Reformers such as Dorothea Dix were fighting for the insane who were being mistreated. So in a way abolitionists are reformers but they are fighting to end slavery.
Abolitionists believed that slavery was morally wrong and that it should be abolished. They advocated for the immediate end to slavery and the emancipation of enslaved individuals. Abolitionists played a crucial role in the movement to end slavery in the United States.