What was the greatest accomplishment of the abolitionist by 1840?

The greatest accomplishment of the abolitionists by 1840 was that they had managed to bring the issue of slavery into the public consciousness. Consequently, the issue gained tract as a prominent topic of conversation and brought into light the injustices of the institution.

interdependence is when all participating groups and individuals depend on each other. if you depend on one anothers goods, you end up trading in order to get the items you're looking for. (for ex: if i have food and you have water, we trade in order to depend on each other to live)