Which two sentences from the passage provide relevant evidence that supports the author's claim? More land was found on the western frontier for settlement and new resources were discovered for use, leading to the nation's growth.
Specifically, after the Soviet Union successfully launched Sputnik I, the world's first artificial satellite, America responded by developing and launching a satellite known as Explorer I.
We are still in that race today, and surely an international cooperative venture into space strikes a blow against catastrophe and leads to a victory for civilization.
Space as a new frontier has always been a driver of the U. S. space programs.
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.

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