How many major battles were there in west between 1860 and 1890

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

Nepal is the common garden of different caste ethnic groups language and culture briefly explain the statements

Why do we have so many wars in the us