Papyrus is a kind of plant that grows in water. The ancient Egyptians cultivated the plant to make a kind of writing material which is called papyrus. Thus, papyrus is both the name of the plant and the name of the writing material. To make long scrolls to write hieroglyphs, the ancient Egyptians used the papyrus plants. As the plants were drying in the sun, the ancient Egyptians used hammers to join different pieces of papyrus together, which resulted in long scrolls of connected parts.
The correct answer to the original question is: Egyptians