Answer:
<em>b. an Operational Definition</em>
Explanation:
An <em>operational definition is the expression of conceptual model (or procedural statement) used to define the terms of a method required to determine the essence of an objec</em>t or an occurrence and its characteristics including period, volume, spatial expansion, chemical properties.
Answer:
Some of the major Mesopotamian civilizations include the Sumerian, Assyrian, Akkadian, and Babylonian civilizations.
It's a large alliance of nations, meant for the protection of themselves, I think.
I believe so but not really sure