I can give you definitions, but not the sentences since I don’t know what the section was about.
Economy:
Dictionary definition: Fragality in the expenditure or consumption of money, materials, etc.
Simple definition (in my own words): Money or materials being traded and consumed.
Civilization:
Dictionary definition: An advanced state of human society, in which a high level of culture, science, industry, and government has been reached.
Simple definition (in my own words): A group or society of humans in which advancements have been made.
Resource:
Dictionary Definition: A sourse of supply, support, or aid, especially one that can be readily drawn upon when needed.
Simple definition (in my own words): A supply of which support can be drawn from.
Religion:
Dictionary definition: A set of beliefs concerning the cause, nature, and purpose of the universe, especially when considered as the creation of a superhuman agency or agencies, usually involving devotional and ritual observances, and often containing a moral code governing the conduct of human affairs.
Simple definition (my own words): One’s belief concerning the cause and purpose of the universe, often in relation to the creation of man, and usually involving a set of beliefs of how one should behave.
Social class:
Dictionary definition: A broad group in society having common economic, cultural, or political status.
Simple definition (my own words): A separation from society based on alike economic and overall status.
Sorry I couldn’t help more! Good luck!