I think that the best answer is the geographic location: many other countries (Sweden for example) have tried being neutral at different times but did not manage to: but the fact that the US has only two boundaries, and that both other countries also have a history of fighting from independence from a European power, makes it possible that unless US decideds to get involved in international politics, it can be "left alone".
"There are assignees, assignors, and obligors."
Answer:
c. borrow words from other languages.
d. invent languages.
e. use abstract terms including past and future.
Explanation:
Linguists are experts who engage in the scientific study, analysis and preservation of language.
Linguists agree the ability to speak a language sets humans apart from other animals because we can invent languages, borrow words from other languages and use abstract terms including past and future.
On the other hand, animals cannot do any of the aforementioned because they are not as smart, intelligent and creative as the human species.
Hence, this set humans apart from other animals as higher level animals with the ability to use language as a tool for effective and efficient communication. Humans can use language as an expression of emotions, feelings and connotation.
