Sentence:  Government itself was based upon contract ; business organization - the corporation - was analyzed in contractual terms ; trade was based on <WSD>freedom</WSD> of contract , and money was lent and borrowed on contractual terms ; even marriage and the family was seen as a contractual arrangement . 
Meaning of the word marked with <WSD> tags:  the condition of being free; the power to act or speak or think without externally imposed restraints