Final answer:
Ancient Egyptians used written language, including hieroglyphs on papyrus and other materials, to document trade, taxes, and administrative records, which was essential for economic planning and growth. The tasks were carried out by scribes, whose work helped preserve the continuity of the Egyptian economy and culture.
Step-by-step explanation:
The ancient Egyptians used written language to keep records and grow their economy through various methods. Hieroglyphs were used for trade agreements and religious texts, showing the complex and sophisticated nature of their script. Papyrus was also utilized for documenting tax records and other administrative documents, contributing to their economic planning. These tasks were performed by scribes, a specialized social class whose extensive training in writing systems made them pivotal in maintaining the continuity of Egyptian culture and bureaucracy. The dry climate of Egypt and the scribes' commitment to record-keeping ensured the preservation of vast amounts of Egyptian writing, which provides valuable insights into their economy and society.