Humans have developed a thing called 'class' . Since we evolved from the ape family how do you think that could have come to happen?

Lucky for you I have class enough not to throw this wine in your face. Cheers :)

Humans, apes, dogs, cats, cows, kangaroos, platypuses and mice are all of the same class: Mammalia.

Kingdom: Animalia
Phylum: Chordata
Subphylum: Vertebrata
Class: Mammalia
Order: Primates
Family: Hominidae
Genus: Homo
Species: Homo sapiens sapiens

We as a species have learned over many generations how to express respect for ourselves and each other, in the interest of both our individual social acceptance and overall social harmony.

”Class” in this case, is a high refinement of our behavior that creates a setting to a positive, mature interrelation between people. We make others feel welcome and comfortable, and express highly evolved qualities of mutual respect and communication.*

Oftentimes, “class” is considered an attribute of inanimate objects like jewels, cars, or buildings. In this example, “class” is a reference to the level of refinement or craftsmanship inherent in each. 

*-...and no, not everyone is capable of, nor intent on such behavior. This post was edited by Don Barzini at October 17, 2017 6:27 AM MDT