Pledge of Allegiance

I pledge allegiance to the flag
of the United States of America
and to the Republic for which it stands
one nation under God,
indivisible,
with liberty and justice for all.

To "pledge" is to promise.
"Allegiance" is to be loyal
a "republic" is a nation where everyone has a say in the governing of
the nation.
"One nation under God" means that we are one nation in the sight
of God.
"indivisible"means that though the United States is made
from many parts, those parts make one whole, which cannot be
torn apart. This is what the civil war was fought about.
"with liberty...  for all" means that everyone in the United States has
equal rights.
"and justice for all" means that if you must go to court, you will be
treated the same, no matter who you are.