Answer:
If you "capture a moment in time" you have successfully created something that expresses what you and your fellow humans were passionate about or interested in during that time.
To make someone notice something and it wouldnt take much of an effort for a person to notice it
I think "that" is the adjective clause because you can remove it without ruining the sentence.
In the 19th century, Realism in France is often mistaken as literary movement because they felt that it laid too much truth specially on external reality. Meanwhile, America needed a type of literature that would explain what was happening to their society. American writers then turned to what is termed as modernism. The influence of realism and naturalismin the 19th century and their truthful illustration of American life and people was shown in post World War I modernism.
Can you give more information?