Question: When did we become the united states of america?
Disambiguated questions and answers: question: When, based on evidence, did we begin calling ourselves the united states of america?
When did we start becoming the united states of america by declaration?
When did we become the united states of america by establishing a central government?
answer: January 2, 1776
July 4, 1776
March 1, 1781
Natural Questions answer: 1776 (from the Wikipedia article "History of the United States")