Who was john paul jones, and what was his significance in the war

An education expert is researching teaching methods and wishes to interview teachers from a particular school district. she randomly selects ten schools from the district and interviews all of the teachers at the selected schools. which type of sample did she use in this study? a)systematic sample b)probability sample c)stratified sample d)cluster sample

Is british society today better than it was 400 years ago?

What was the social class pyramid during the civil war?