"laissez faire" describes that kind of attitude
it is said the allies won WW1 by staying in a stalemate of trench warfare. and holding the axis powers at bay, till the u.s came with fresh soldiers and so it made an impact.
The answer to this question is <span> D. Transcendentalism
Transcendentalism emerged in the late 1820s from the intellectuals who constantly made an effort to find the truth about the universe.
This movement was heavily criticized by most people during that time that relied on what's written on religious scripture for understanding the universe. </span>
I think they are all true but I did this unit a little while ago so I might be wrong