Which phrase best completes the diagram?

A two-tier flowchart:

Tier One:
- Important Egyptian Achievements

Tier Two:
1. Was not conquered for thousands of years.
2. Built huge pyramids as monuments.
3. ?

Options:
1. Developed a system of money using coins
2. Created a religion based on equality
3. Shipped grain all around the region
4. Mined more gold than any other kingdom

The best phrase to complete the flowchart on important Egyptian achievements is 'shipped grain all around the region,' reflecting Egypt's strong agricultural trade due to the Nile's abundance.

Explanation:

The best phrase to complete the diagram that showcases important Egyptian achievements would be 'shipped grain all around the region' because ancient Egypt was known for its incredible abundance due to the Nile, allowing it to become hugely prosperous and engage in extensive regional trade. This aligns with the third option provided and is supported by the evidence that Egypt's geographic advantages and agricultural productivity not only contributed to its own wealth but also to its ability to distribute goods such as grain. The construction of pyramids, like the Great Pyramids of Giza, and the development of a centralized bureaucratic system are other notable achievements that illustrate Egypt's organization and cultural sophistication.

While the ancient Egyptians did mine gold and had substantial wealth, the available evidence does not support the claim that they mined more gold than any other kingdom, particularly in the context of the entire ancient world. Additionally, the development of a system of money using coins is more closely associated with ancient Lydia, and while ancient Egyptian religion was highly influential, it was not based on equality but on a complex pantheon of gods and divine pharaohs.