What is the purpose of this artwork above?​

French revolution to the correct category

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

Explain what might happen if the supreme court did not have the power to check the other two branches.