Why is widespread unemployment considered a public issue?

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

What led to the westernization and annexation of hawaii?

Should the u. s limit the number of terms a lawmaker can serve in congress