There is a misconception with this question. The United States of America never wanted war with Britain. The United States of America wanted independence. More obvious considering the intolerable acts and other events prior to the American Revolutionary War. There were also troubles that lead to the War of 1812, to learn more on those I recommend doing librarian and internet research.
If you by section, you mean the document that states the United States of America as an independent republic, that would be the
Declaration of Independence.
If by section you mean land, that would be the Thirteen Colonies which I will show a picture of. On the globe, this is in the mid-eastern shore of North America.
Credit of picture goes too ducksters.com