Can You Remember? Crossword

a means of supplying land with water
wall of earth built to prevent a river from overflowing its banks
animal that ate saplings causing deforrestation
land between the Tigris and Euphrates Rivers
something used to preserve meat; traded
small particles of soil or clay that clogged up irrigation canals
considered the first city-state
metal made by combining copper and tin
tool developed in Europe to help farmers
people without a permanent home who moved around to find food, shelter and resources
society of many levels with a chief or king at the top
early grain that can be ground into flour
heating ore to a high temperature to extract the metal
animal helpful in hunting and protection
growing crops and raising livestock
one of the rivers that ran through Mesopotamia