Clytemnestra Troy. The Trojan War lasted ten years. During this period of Agamemnon's long absence, Clytemnestra began a love affair with Aegisthus, her husband's cousin. Whether Clytemnestra was seduced into the affair or entered into it independently differs according to the respective author of the myth. Nevertheless, Clytemnestra and Aegisthus began plotting Agamemnon's demise. Clytemnestra was enraged by Iphigenia's murder (and presumably the earlier murder of her first husband by Agamemnon, and her subsequent rape and forced marriage). Aegisthus saw his father Thyestes betrayed by Agamemnon's father Atreus (Aegisthus was conceived specifically to take revenge on that branch of the family).
Greek mythology existing literary evidence. Greek mythology has changed over time to accommodate the evolution of their culture, of which mythology, both overtly and in its unspoken assumptions, is an index of the changes. In Greek mythology's surviving literary forms, as found mostly at the end of the progressive changes, it is inherently political, as Gilbert Cuthbertson has argued. The earlier inhabitants of the Balkan Peninsula were an agricultural people who, using Animism, assigned a spirit to every aspect of nature. Eventually, these vague spirits assumed human forms and entered the local mythology as gods. When tribes from the north of the