The third one on the right
Sometimes people engage in trade in order to get what they need or to communicate.
Originally the Deceleration of Independence condemned the slave trade along with the British acceptance of it. This as somewhat ironic as Tomas Jefferson, the author, was a slave owner. The phrase condemning slavery was taken out to maintain southern support for the Revolution, as the south was much less interested in fighting a revolution at the time and they relied on slave labor to run their plantations.