Susan, a college freshman, is taking college algebra. She never liked math and fears she will probably not do well in this first
math course. She stays up all night studying for the first exam, and the next morning, she enters the classroom to take the test. As she sits down and takes out her pencils, she feels nervous; she begins to sweat, her stomach is upset, and her heart begins to race. What is happening to Susan
Governments organized workers to build large scale projects such as roads, water systems, city walls, and granaries where food was stored after harvesting.
