In
the
U
.
S
.
,
artists
in
the
mid
-
1950s
began
to
create
a
____________________
to
Pop
and
a
new
style
of
art
,
strongly
influenced
by
Dada
and
its
emphasis
on
appropriation
and
everyday
objects
.
Artists
increasingly
worked
with
____________________
,
consumer
products
,
and
a
healthy
dose
of
irony
.
Jasper
Johns
re
-
imagined
iconic
imagery
like
the
American
flag
;
Robert
Rauschenberg
employed
silk
-
screen
printings
and
found
objects
;
and
Larry
Rivers
used
images
of
mass
-
produced
goods
.
These
three
are
considered
to
be
the
____________________
of
American
Pop
.