What area on the Iberian Peninsula maintained independence after the Reconquista?

What was the social class pyramid during the civil war?

What is an attack against a country called?

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