Banliang, also known as bronze coins which were later turned into silver coins.
Answer: Banliang
"A special committee worked out another compromise: Congress would have the power to ban the slave trade, but not until 1800. The convention voted to extend the date to 1808. A final major issue involving slavery confronted the delegates. Southern states wanted other states to return escaped slaves."
Sites on the Trail include the Park Street Church, Granary Burying Ground, King's Chapel, Old Corner Book Store, Old State House, Faneuil Hall, Paul Revere House, The Old North Church, USS Constitution, and Bunker Hill Monument.