Final answer:
Stonehenge was being constructed in Britain during the same time that Gilgamesh ruled as king in Uruk. The Neolithic revolution, which led to the development of agriculture and settled communities, played a significant role in the construction of Stonehenge.
Step-by-step explanation:
While Gilgamesh ruled as king in Uruk, the construction of Stonehenge was taking place in Britain. Stonehenge, an iconic megalithic monument, was built around 3,000 BCE and represents the cultural advances brought about by the Neolithic revolution. The Neolithic revolution, which occurred approximately 11,500-5,000 years ago, led to the development of agriculture and settled communities.