After Gulliver is freed from captivity,

what is his first request

His first request was to explore Lilliput.

Explanation:

After regaining his freedom from captivity, Gulliver travels to Mildendo, which was the capital city of the Lilliputians.

The residents are informed to remain indoors, and they all sit on their garret and roofs in their windows to see him. The town is square feet of 500 with a wall surrounding it, and can contain about 500,000 people.

The emperor wants Gulliver to see how adorable his palace was, which is located at the center of the city, so Gulliver brings down trees to make himself a stool, which he carries around with him so that he can sit down and see things from a lesser distance than a standing position permits.