When did america become united states of america?
On July 4, 1776 they adopted the Declaration of Independence and this date is celebrated as the nation's birthday. On September 9 of that year, Congress officially changed the nation's name to the United States of America. Until this point, the nation was known as the "United Colonies of America"
When did the country that would become known as the United States of America become a country?
July 4, 1776
History of the United States
No context provided
When was the name United States of America first used?
September 9, 1776
History of the United States
https://en.wikipedia.org/wiki/History%20of%20the%20United%20States
On July 4, 1776 they adopted the Declaration of Independence and this date is celebrated as the nation's birthday. On September 9, 1776 Congress officially changed the nation's name to the United States of America. Until this point, the nation was known as the "United Colonies of America"