The Slave Trade is the industry that grew with slavery in the United States.
Taxation without representation, was their main issue. they wanted to be a free nation.
Settlers were not to go west of the Appalachian mountains. Further purchases from Indians of land to the east of that line were prohibited. The Indian territories west of the proclamation line would be under the authority of the military.
If I were making a graph, I would make the line decrease in order to represent the employees that have left the company.
Have a nice day! :)