We of course celebrate our independence here in the US. Later today I'll be at work though so I'm not sure how independent I am. Hmm, maybe someday. The same thing applied to the call centers I worked at, there were no holidays.
At any rate a bit of writing is how the country declared independence. It was all over what's really not what would be considered a large tax today. It's just that the people living in the colonies weren't the ones that mandated it. Previous of this time Parliament would send a writ that stated how much in taxes was required and legislatures in each colony came up with how to generate the requested amount.
Here's a short video about it. https://www.youtube.com/watch?v=ICKmSHYP8Co