I think that is it safe to say (I mean by this: check if it's among your options) that both individual and international trade are voluntary exchange of goods -both parties have to agree on it without being forced to it. Also they should be mutually beneficial - otherwise the two parties would have have agreed!
Answer:
Individuals are the basic building blocks of society, and this chapter examines some characteristics of individuals that are important to this role, including intelligence and will, and defines and elaborates the central concept of identity. A simple model of intelligence is proposed, and a number of factors-both internal, such as our concept of freedom, and external, such as the complex structure of society-influencing its operation are considered.
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I recommend google it's very cool thing called a search engine.
