Final answer:
To complete the analogy 'anu: uruk :: enki: ???', the answer is 'Eridu', which is the city most closely associated with the god Enki, as Uruk is associated with Anu.
Step-by-step explanation:
To complete the analogy anu: uruk :: enki: ???, we need to find a city most closely associated with the god Enki. Anu is the sky god connected to the city of Uruk, as evidenced by the Anu Ziggurat on which the White Temple was built, dedicated to Anu. Similarly, Enki, also known as Ea, is the god of water, knowledge, mischief, crafts, and creation and is associated with the city of Eridu. Hence, the completed analogy is anu: uruk :: enki: eridu.
Enki's temple, known as E-abzu, meaning 'abzu temple' (abzu refers to a cosmic subterranean watery realm over which Enki presided), was located in Eridu, which was believed to be the first city in the world according to Sumerian mythology. In historical times, Eridu was a major city in the southern part of ancient Mesopotamia, in present-day Iraq.