The american anthropologist edward sapir had formulated the problem and his student, benjamin whorf, drawing on his experience with the language of the hopi indians, developed a full-fledged theory now known as the theory of
(a) linguistic relativity principle
(b) cultural relativity
(c) linguistic nationalism
(d) phenomenology

the correct answer is (A) Linguistic relativity principle  

Explanation:

In linguistics, the Sapir-Whorf Hypothesis states that there are certain ideas or thoughts of an individual in one language that cannot be comprehended by those who live in another language. The hypothesis states that the way people think is hardly affected by their native languages.

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industry had made the u.s. the richest nation in the world at this time. the second industrial revolution caused growth in industry and transportation, which allowed increased trade between nations.