Why does the USA really celebrate the Fourth of July?

The Fourth of July is celebrated because it is commemorating the adoption of the Declaration of Independence .

AnswerThe first official US holidays were declared by Congress on June 28, 1870. New Years Day, Independence Day, Thanksgiving Day, and Christmas Day were all declared holidays in the first act. George Washington's Birthday was declared a holiday in 1871.

According to Title 5 of the US Code, neither Congress or the President has the authority to declare a holiday that must be enforced by the states - Federal holidays are only applicable to Federal employees and the District of Columbia.

Each state chooses which holidays it will recognize.

Extra:

Massachusetts declared the 4th a celebration in 1781.

Boston declared the 4th a city holiday in 1783.

North Carolina declared the 4th a holiday in 1783.

Each day was declared a holiday for various reasons, but they all included the ability of workers to observe celebrations without loss of pay because of missed work.

QUOTE:

"The act of June 28, 1870, which was apparently prompted by a memorial drafted

by local "bankers and business men," provided that New Year's Day, Independence

Day, Christmas Day, and "any day appointed or recommended by the President of the

United States as a day of public fasting or thanksgiving [were] to be holidays within the District." This legislation was drafted "to correspond with similar laws of States

around the District,"3 and "in every State of the Union."

There is a link below.
The fourth of July is Celebrated because This is When the Untied States Gained its Independence From the English (England).

(Please update this answer why would you celebrate that)

its my friend, Michael kenneth gray's birthday