Question

use what you have learned about the four ancient river civilizations to complete the text.
sumerian harappan unified kingdoms city - states
each of the four river civilizations had a slightly different social organization.
while the sumerian civilization was organized into
, the old
kingdom egyptian civilization and the shang dynasty’s civilization were both
. historians disagree about whether the
civilization was one unified kingdom or many city - states.

Explanation:

1. For the first blank: Sumerian civilization was known for being organized into city - states. These were independent political entities with their own governments, economies, and cultures.
2. For the second blank: The Old Kingdom Egyptian civilization and the Shang Dynasty's civilization were organized as unified kingdoms. They had a single central authority that governed a large territory.
3. For the third blank: The Harappan civilization is the one about which historians debate whether it was a unified kingdom or multiple city - states.

Answer:

First blank: city - states
Second blank: unified kingdoms
Third blank: Harappan