Most economic growth in the world occurred between 1,000,000 B.C. and 1300 A.D

Which of the following statements is true?

A) Technological innovation can cause unemployment in a country as a whole. B) Technological innovation always complements labor. C) Technological innovation can cause unemployment in a single industry. D) Technological innovation always substitutes labor.

The market demand curve is the horizontal summation of all individual demand curves

a. True b. False Indicate whether the statement is true or false