Final answer:
The statement relates to the American policy of Manifest Destiny, a 19th-century doctrine advocating for the expansion of US territories, Americanization of new residents, and the spread of freedom.
Step-by-step explanation:
The American policy supported by the statement “No man has a right to fix the boundary of the march of a nation; No man has a right to say to his country: this far you should go and no further” aligns with the concept of Manifest Destiny. This 19th-century doctrine held that it was the United States’ inevitable fate to expand its territory across North America. The belief in Manifest Destiny asserted that such expansion not only was justified but also was a moral duty to spread democracy and capitalism among what many Americans saw as a largely uncivilized world.
Test Yourself section clearly demonstrates that the doctrine encompassed several key ideas such as expansion “from sea to shining sea,” the Americanization of residents in newly acquired territories, and the equivalence of spreading U.S. boundaries to the spreading of freedom. Therefore, the best answer is d. all of the above.