What were the first group of people to call end slavery

The abolitionist movement was an organized effort to end the practice of slavery in the United States. The first leaders of the campaign, which took place from about 1830 to 1870, mimicked some of the same tactics British abolitionists had used to end slavery in Great Britain in the 1830s.

i would say it is the roman empire europe after the norman conquest.

bipartisan basally means two groups of people who dont agree with each other (republican and democrat) make an agreement or work with each other