Answer:
Step-by-step explanation:
It is not so much the words that important by themselves. It is that paragraph uses parallel sentence structure to compare and contrast what will be done to maintain and uphold what our forefathers have accomplished.
- this generation does not intend to founder in the backwash of the coming age of space,
- We have vowed that we shall not see it governed by a hostile flag of conquest, but by a banner of freedom and peace.
- We have vowed that we shall not see weapons of mass destruction but instruments of knowledge and understanding.
Notice how powerful the language is. It contrasts what won't be done with what will, and what will be done always points to the positive.