Which statistic would best explain china's ability to improve its economy so much for such a long period of time? a) a life expectancy of over 74 years of age b) military spending is 4.3% of gdp each year c) mandatory levels of education and a 91% literacy rate d) people under the age of 15 years are 20% of the population

The persian wars started when emperor darius i began an invasion of greece. what caused darius to decide to attack greece? a. greek pirates had raided persia's merchant ships and coastal towns. b. greek armies had attacked and taken over land that belonged to persia. c. greek city-states had supported rebellions in the persian empire. d. greek leaders had declared independence from the persian empire.