There was essentially a “mortality revolution” in the eighteenth century. Developed nations experienced drops in death rates during this period, when, because of the Industrial Revolution, European nations witnessed the introduction of many new and beneficial technologies that raised standards of living and essentially overcame famine and epidemics. As a result of this phenomenon, the population of the world climbed, reaching a billion people in the year of 1802. Which of the following best expresses the essential information in the highlighted sentence? Incorrect answer choices change the meaning in important ways or leave out essential information.