Why does Agamemnon sacrifice Iphigenia?

Agamemnon sacrifices Iphigenia to appease the goddess Artemis, who has halted the Greek fleet's advance to Troy by causing unfavorable winds. To gain favorable winds and ensure the success of the expedition, Agamemnon is faced with the dire choice of sacrificing his daughter. This act is driven by his desire for glory and victory in the Trojan War, reflecting the tragic conflict between personal sacrifice and the demands of duty and fate.