Why do we celebrate Independence Day?

"Independence Day is a holiday known for the . . . ways in which people choose to celebrate, parades, cookouts, and fireworks. To many, the holiday is known simply as the Fourth of July. Some readers may not know the reasons we celebrate this holiday. What is the significance of celebrating on this specific date? What exactly happened on July 4, 1776? With accessible vocabulary and . . . photographs, this book will teach readers about the history behind the holiday, and the different ways that families across the country celebrate Independence Day"--Provided by publisher.