Use the drop-down menu to complete the sentence. (1 point)

Sumer is important in world history because it was.
The world's first civilization.
where human beings evolved.
Where the first fishing villages developed.
the world's largest empire

Sumer is important in world history because it was the world's first civilization.

Sumer is important in world history because it was the world's first civilization.

To complete the sentence, use the drop-down menu and select the option "The world's first civilization."