The United States of America (USA) celebrates Independence Day today. July 4 marks the 245th anniversary of the declaration of independence of the United States of America. The Declaration of Independence is a document where 13 UK colonies in North America declared independence from the UK. The Declaration of Independence was ratified on July 4, 1776. The American Constitution, signed in 1787, describes the basis and structure of the United States government, which is divided into three branches, the executive, the legislature, namely the President, Congress, and Supreme Court. US Independence Day is celebrated with grand parades, family celebrations and closes with fireworks.