To make an amendment to the Articles of Confederation all 13 states would have to unanimously agree to the proposal to amend it.
However if even one state is opposed to abolishing slavery country wide, it cannot be done. so therefore it is extremely unlikely it could solve the problem. This was one of the articles of Confederations major flaws
The author of this excerpt is presenting an argument for Japan to follow a policy of "<span>(4) economic imperialism" since there are so few other options available. </span>