Acetanilide: Acetanilide,, synthetic organic compound introduced in therapy in 1886 as a fever-reducing drug. Its effectiveness in relieving pain was discovered soon thereafter, and it
MidÂ·west. A region of the north-central United States around the Great Lakes and the upper Mississippi Valley. It is generally considered to include Ohio, Indiana, Illinois, Michigan, Wisconsin, Minnesota, Iowa, Missouri, Kansas, and Nebraska. The area is known for its rich farmlands and highly industrialized centers.
Therefore, the states that make up the North-Central region of the United States of America are: Iowa, Kansas, Minnesota, Missouri, Nebraska, North Dakota South Dakota, Illinois, Indiana, Michigan, Ohio and Wisconsin ============== I hope this information is helpful.