Answer:
-Some have argued that many of the distinctive characteristics that make up American society, including inventiveness, inquisitiveness, and individualism, derived from the existence of a frontier.
-Space as a new frontier has always been a driver of the U.S. space programs.
Explanation:
According to the reading of the text, the main issue addressed by the author is that the need for human beings to want to explore and conquer space is unjustifiable, if we observe that the earth is a planet with many problems to be solved. The author states that the ideal was that human beings were first concerned with solving problems on their own planet so that they would later wish to explore and conquer other territories, but the desire for conquest and the fascination for overcoming borders is so intrinsic to human beings, especially to Americans, that the desire to break this boundary between humans and the mysteries of space becomes greater than anything else. To support, that is, to intensify this argument and show it as true, the author presents the following sentences:
-Some have argued that many of the distinctive characteristics that make up American society, including inventiveness, inquisitiveness, and individualism, derived from the existence of a frontier.
-Space as a new frontier has always been a driver of the U.S. space programs.
