1."sleeping giant"
2. "america has given the negro people a bad check"
3."all the world's a stage, and all of the men and women merely players"
4."nature's first green is gold"
5."the calm before the storm"

answer
a.
lines from shakespeare's hamlet refers to how people live their lives

b.
spoken by martin luther king and refers to civil rights of african americans

c.
refers to america after the attack on pearl harbor

d.
can be used as a metaphor to describe volatile emotional issues between people

e.
from robert frost's poem "nothing gold can stay"