It is a declarative sentence.
Increased parties and barbeques as well as weekend fourth of July celebrations put people in a more festive mood. This fact is why most states increase their DUI checkpoints on the fourth of July weekend.
the weekend of July 4th
Fireworks.
the weekend of July 4th
July 4th
Example sentence - He lived in the fourth house from the corner.
i wrote a sentence containing forth and fourth.
He came in fourth place.
There is not a fourth word.
Neither weekend is considered the 4th. The 4th of July is a Federal holiday and will be celebrated on the actual date. Most business have opted out of a long holiday weekend.
'Happens" just happened to be the fourth word that was sent forth in the example questioning sentence.
It's an incomplete sentence.