What was the result of the Dred Scott V Sanford case and why was it important?

How did republicans gain control of southern state governments during reconstruction

Where do the majority of cases heard by the supreme court originate?

Donald is studying the eating habits of all students attending his school. he samples the population by dividing the students into groups by grade level and randomly selecting a proportionate number of students from each group. he then collects data from the sample. which type of sampling is used? select the correct answer below: systematic sampling convenience sampling stratified sampling cluster sampling