| A | B |
| desertification | any change of fertile land into desert |
| delta | a triangle-shaped area of islands and marshes at the mouth of a river |
| silt | fine bits of rock and soil carried or deposited by water |
| predict | to tell ahead of time what will happen |
| cataract | a waterfall |
| dynasty | a series of rulers from the same family |
| pharaoh | a ruler of ancient Egypt |
| edict | a command |
| hieroglyphics | a writing system in which pictures of symbols stand for sounds, whole words, or ideas |
| papyrus | a paper-like material ancient Egyptians used to write on |
| pyramid | a burial place for the dead; often for a dead ruler |
| obelisk | an ancient stone monument |
| annex | to take over |
| independence | complete freedom |
| trading network | a group of buyers and sellers |