currency – n. the money that a country uses
manipulator – n. one who uses or controls other people in a clever and often unfair or selfish way
scarcity – n. a very small supply of something
adjustment – n. a small change that improves something or makes it work better
advantage – n. something (such as a good position or condition) that helps to make someone or something better or more likely to succeed than others
sustain – v. to provide what is needed for (something or someone) to exist, continue,