In 1808 Thomas Clarkson published his two-volume text, The History of the Rise, Progress and Achievement of the Abolition of the Slave Trade African slaves by the British Parliament, after the prolonged campaign to abolish the slave trade in the British Empire. In this text, Clarkson inserted his own map of the path to abolition, composed of the efforts of prominent intellectuals, politicians, and religious organizations. This essay will demonstrate that Clarkson's map overlooks the informal abolition activities that coincided with the official abolition campaign, both within and outside the map's period; it actually ends twenty years before the passage of abolitionist legislation in 1807. This argument will also examine the role of marginalized groups, including women, blacks, and the public, in the non-informal activities involved in the crusade for the abolition of slavery. Recent studies and some primary texts will be used to argue that various informal activities are missing from Clarkson's map and must be examined for their contributions to the crusade. The map examines activities and individuals missing from the current period, ending in 1787, and this study will therefore explore activities after 1787 that should have been included on the map. A point of conflict on the map is the twenty year period. gap between 1787 and 1807, undoubtedly a critical period on the eve of abolition. The map does not show the contributions that ultimately prompted Parliament to pass a law abolishing the slave trade. In this gap, Clarkson further overlooks the important contributions made by marginalized groups to abolition. Historians have moved away from traditional studies of the abolition of trade to focus on ...... middle of article ...... of. They served as a means of arousing popular sentiment against the slave trade. Drescher argues that these media played an important role in the first national mobilization. For example, organizers of the Manchester petition advertised the abolition of the slave trade by submitting their petition to all major newspapers in England to promote the creation of further petitions by readers (Drescher, 49). The Manchester Committee disseminated the information from their petition to others. Advertisement published in all major English newspapers to encourage readers to submit/organize a similar petition (Drescher, 49). Manchester serves as a model petition. The petition published in Manchester was central to public agitation against the slave trade. Ten days after newspapers first reported the Manchester petition in the General Post, the public agitation/attack on the slave trade (Drescher, 49).