Answer:
Pygmalion effect
Explanation:
Pygmalion effect is the psychological process in which the expectation related to work improves the performance of a person. George Bernard Shaw was a social psychologist who proposed the Pygmalion effect.
Many psychologists conducted much research on the Pygmalion effect. Rosenthal was a psychologist who has been used this affect students' classroom where it has been called a classroom Pygmalion effect.
Thus here Sarah a middle-class school teacher who has been used Pygmalion effect in her classroom to improve the performance of the students.
Strong leadership from king henry
Shay’s rebellion showed leader of the US that the Articles of Confederation was not strong enough because they were not able to stop the rebellion from happening, or prevent it from doing damage. The national government at the time was very weak and it was extremely difficult to get any peace keeping force across state lines due to interstate diplomacy.