<em>Which concept does Roosevelt most likely intend to convey in this sentence? </em>
<em>The answer is, Optimism is important to success.</em>
<em>When Roosevelt reinforces the fact that this nation will endure as it has endured, he does it to tell his people that no matter how it looks today our nation will prosper, no matter how bad it appears to be, this nation has always stood up. American Manifest Destiny, though it refers to expanding his lands by providential order, also gives Americans a providential pull, a lift up, that always takes them forward. Roosevelt is aware of this, but his people has forgotten it, and he reinforces this truth to lift up the moral of the American people.</em>
Answer:
The speaker is talking about their journey and how it isn't to accomplish anything. In their perspective, they are scaling a "metaphorical mountain" for no specific reason.
It involves the military application of advanced scientific research regarding nuclear weapons, jet engines, ballistic and guided missiles, radar, biological warfare, and the use of electronics, computers and software.
