Happy "Independence" Day- why it sounds funny to me

Well,  HAPPY INDEPENDENCE DAY to all of you.
______________________________________________________________
It's a Sunday, and most of the human beings have their weekend. So it is an Independence Day, isn't it?

As of August 15th, the "Independence Day" of our country, India, flags are being hoisted, colorful functions and patriotic songs have surrounded the environment. Our Capital has a great show there, like every year.
What is "Independence" by the way? I mean, the two words "Independence" and "Freedom" are vastly used on this special day.

Are you Independent? Are you Free?


WE, THE PEOPLE OF INDIA, having solemnly resolved to
constitute India into a SOVEREIGN SOCIALIST SECULAR DEMOCRATIC
REPUBLIC and to secure to all its citizens:
JUSTICE, social, economic and political;
LIBERTY of thought, expression, belief, faith and worship;
EQUALITY of status and of opportunity;
and to promote among them all
FRATERNITY assuring the dignity of the individual and the unity and
integrity of the Nation;
IN OUR CONSTITUENT ASSEMBLY this twenty-sixth day of November, 1949,
do
HEREBY ADOPT, ENACT AND GIVE TO OURSELVES THIS CONSTITUTION.