What means of communication do the Lilliputians use with Gulliver?

The Lilliputians communicate with Gulliver primarily through letters written on paper. This method reflects their civilization's level of literacy and developed communication systems. The letters allow for detailed exchange of ideas, instructions, and information, demonstrating a structured and formal way of conveying messages.

While other forms of communication, such as sign language or visual symbols, could be considered in scenarios where there is a language barrier or when conveying simple messages, the use of handwritten letters signifies a more advanced means of dialogue, showcasing the Lilliputians' cultural sophistication in writing and reading. Letters also provide permanence to their thoughts and can be referred to multiple times, adding depth to their interactions with Gulliver.