Final answer:
The most accurate completion for the table of important Egyptian achievements is 'Developed the first irrigation system', as the Egyptians used the Nile's predictable flooding to develop advanced farming techniques and create surplus food supplies.
Step-by-step explanation:
Which Phrase Best Completes the Table of Important Egyptian Achievements?
The phrase that best completes the table of important Egyptian achievements is 'Developed the first irrigation system'. Ancient Egypt's civilization thrived along the Nile River, which flooded annually, depositing fertile mud and silt conducive for agriculture. Early Egyptians capitalized on this by developing sophisticated irrigation processes that enabled them to harness the Nile River for farming, leading to a surplus in food supplies. This innovation allowed them to direct their energy towards technological and cultural advancements.
Notably, the Egyptians were not known for giving women the same rights as men or for conquering the world's largest empire; the latter is more characteristic of the Macedonian or Roman Empires. Moreover, while ancient Egyptians indeed created a unique style of art, the phrasing 'Developed the first irrigation system' directly relates to their environmental and technological achievements, which is essential when discussing their most significant accomplishments.