Answers for your questions will be as follows:
Explanation:
Modernism: An artistic movement started in early 20th century that challenges traditionalist ideas of form, time and subject matter and argues for fluidity and relative subjectivity.
Imagism: A parallel movement to Modernism that believed in clarity of expression with the help of precise images.
Step 1:
Modernism: Love Song of J Alfred Prufrock, Poet: T S Eliot
Imagism: In a station of the metro, Poet: Ezra Pound
Step2:
Modernism:
'Let us go then you and I,
when the evening is spread out against the sky
like a patient etherized upon a table'
Imagism:
The apparition of these faces in the crowd:
Petals on a wet, black bough.
Step 3:
Modernism:
The poem compares an unusual image of a patient on a table to a night spread in the sky. This happens in the first few lines of a poem titled the love song. Thus, it breaks traditionalist rules to derive unusual meaning.
Imagism:
The stark image created by the two lines form the entirety of the poem and describes the whole them.