Mesopotamia's earliest cities grew on a flat plain watered by two rivers that flow toward the Persian Gulf. What is that river system called?

Egyptian farmers relied on a flood that arrived at about the same season each year and left a fresh layer of silt on their fields. Which river produced that flood?

Each year the Nile's flood spread a fresh layer of silt over the fan of channels near the river's mouth. What did that yearly deposit give Egyptian farmers?

Geographers use one name for the band of land running from the Persian Gulf up through Mesopotamia and over to the eastern Mediterranean coast, where some of the earliest farming began. What is that name?

Fine yellow soil called loess blows and washes into a river in northern China, coloring its water. Which river is this?

How did the yearly flooding of the Tigris and Euphrates differ from the flooding of the Nile?

River valley farmers dug canals and ditches to carry river water out to fields that lay away from the bank. What is this practice called?

Once river valley farmers could grow more grain than their families ate, what did that surplus make possible in their settlements?

Two of the largest cities of the Indus River valley civilization are known to archaeologists by what names?

At Mohenjo-Daro, streets were laid out in a regular grid of blocks, and covered drains ran beneath them. What does that arrangement suggest about the city?

What did builders in southern Mesopotamia mainly use for the walls of houses, temples, and cities?

Desert stretched away on both sides of the narrow Nile valley. How did that setting affect early Egypt?

Wheat and barley were the main grains of Mesopotamia and Egypt. Which grain was instead the main early crop of farmers along northern China's Huang He?

Which river valley civilization is known for some of the earliest growing and weaving of cotton into cloth?

The Nile River flows northward and empties into the Mediterranean Sea.

In ancient Egypt, farmland was spread evenly across the whole land rather than concentrated in a narrow green strip beside the river.

The name Mesopotamia comes from Greek words meaning the land between the rivers.

Mesopotamian cities traded their grain and woolen cloth to obtain timber, stone, and metal. Why did they have to import those goods?

In the Indus valley, seasonal winds called monsoons brought heavy rain. How did the timing of those rains help farmers there?

Which river flows across southern China, in the warmer, wetter region where rice farming developed?