The traditional focuses of sociology include social stratification, social class, social mobility, religion, secularization, law, sexuality and deviance.
These were called calceus mulleus, and the name may have been shortened to mules by English speakers. Hence the primary difference between mules and clogs in early days was that clogs were likely to be worn by working people, and mules were fancier and favored by the aristocracy.
A mule must have plenty of power and the Pro FXT Mule comes with an engine unlike any other Kawasaki has used. The engine is a liquid cooled, 812cc three cylinder with Fuel Injection and it is located mostly under the rear cargo bed, making the ride in the front much quieter.