What were the political and social continuities in the Ottoman Empire? What was the difference between China and the Ottoman Empire with regard to internal upheaval and why was it different?

Dr. williams conducted a survey in the mall, measuring the shopping habits of people ages 15, 25, 35, 45, and 55, with 10 people in each group. which of the following best describes her study? an experiment a cross-sectional study a case study a longitudinal study a double-blind study