Ancient Greece

Archaic period
Kouros (the singular form) is a term used to describe a type of statue of a male figure produced in marble during the Archaic period of Greek art.
The kouros was not intended as a realistic portrait of the deceased, but an idealized representation of values and virtues to which the dead laid claim: youthful beauty, athleticism and aristocratic bearing, among others.
They all have a conventional pose, where the head and body can be divided equally by a central line, and the legs are parted with the weight placed equally front and back. The male figures, usually in the form of naked young men, acted both as grave markers and as votive offerings
The female figures served similar functions, but differed from their male counterparts in that they were elaborately draped.

Classical period
By around 500 B.C.E.  "rule by the people," or democracy, had emerged in the city of Athens. Following the defeat of a Persian invasion in 480-479 B.C.E., mainland Greece and Athens in particular entered into a golden age. In drama and philosophy, literature, art and architecture

Hellenistic period
Following the death of Alexander and the division of his empire, the Hellenistic period (323-31 B.C.E.) saw Greek power and culture extended across the Middle East and as far as the Indus Valley. When Rome absorbed the Greek world into its vast empire, Greek ideas, art and culture greatly influenced the Romans.

Dispersed around the Mediterranean and divided into self-governing units called poleis or city-states, the ancient Greeks were united by a shared language, religion, and culture.
Not only did the complex socio-cultural system of the Mycenaeans disappear, but also its numerous achievements (i.e., metalworking, large-scale construction, writing).
the kouros stands rigidly with both arms extended at the side and one leg advanced. Frequently employed as grave markers, these sculptural types displayed unabashed nudity, highlighting their complicated hairstyles and abstracted musculature
The kore, on the other hand, was never nude. Not only was her form draped in layers of fabric, but she was also ornamented with jewelry and adorned with a crown
most agree that they were originally intended as votive offerings to the goddess Athena.

During the “High Classical Period” (450-400 B.C.E.), there was great artistic success: from the innovative structures on the Acropolis to Polykleitos’ visual and cerebral manifestation of idealization in his sculpture of a young man holding a spear, the Doryphoros or “Canon”
other artists were more interested in capturing motion and emotion. For example, on the Great Altar of Zeus from Pergamon (below) expressions of agony and a confused mass of limbs convey a newfound interest in drama.
With the Roman admiration of and predilection for Greek art and culture, however, Classical aesthetics and teachings continued to endure from antiquity to the modern era.