The United States is a young country. Its Independence was declared in 1776. In 1776, when the independence of the USA was declared, 13 «founding» states entered the federation. From 1959 the federation comprises 50 states. It's a federative republic. So the 4th of July was declared Independence Day of the USA and was the beginning of a new nation. This day is celebrated by people all over the United States. Though Americans are so hard-working and they do not take many vacations this day is one of five national holidays in the USA. On this day every town and city has parades, games and sports with prizes. There are picnics and barbecues, and in the evening there are big firework displays.