Here are the terms that would appropriately fit in the boxes:
- The highest social class of early civilizations was held by nobles.
- The lowest social class consisted of slaves.
- Groups such as artisans were considered to be part of the middle level of society.
- Rulers claimed that they were given the right to rule by divine right.
So the completed sentences would read:
The highest social class of early civilizations was held by nobles. The lowest social class consisted of slaves. Groups such as artisans were considered to be part of the middle level of society. Rulers claimed that they were given the right to rule by divine right.