Over half of all slaves were _ years old.

Identify the example of when situation and time are key to assessing risk of harm in a research study: a study on the efficacy of a behavioral intervention for smoking cessation involves both adults and teenagersasking women if they have had an abortionresearch on the prevalence of hiv-infected individuals in communitiesa survey about sexually transmitted diseases

During the early period of spanish colonialism, the death of large numbers of native people led to what

Which georgia shipyard produced 88 liberty ships?