True or false? 1. within high-fertility countries, the fertility rates for the poor are higher than those for the wealthy within the same country. 2. the literacy rate has become increasingly less useful as an indicator of economic progress within a country. 3. slavery in the united states a. was not defined by law and custom prior to the civil war b. was a temporary status for most slaves c. was challenged by some slaves through acts of resistance d. is no longer an issue and has had no effect