Why did Asoka build stone pillars across his empire?

Bull files a suit against clay in a state court over payment due on a short-term lease of grazing land. the case proceeds to trial, after which the court renders a verdict. the case is appealed to an appellate court. after its review of bull v. clay, the appellate court upholds the lower court’s verdict. the appellate court has:

If a swimmer is traveling at a constant speed of 0.85 m/s,how long would it take to swim the length of a 50m olympic sized pool?

Which example define natural rights ?