sentences:  In this way, Gaínza became, de facto, the first head of state of the independent nation of Central America ("Jefe político" in the words of the Act of Independence).However, there was one important point that the Act of Independence of September 15 did not address—the relation of the Kingdom of Guatemala to the recently created Mexican Empire.On October 29, 1821, Mexican Emperor Iturbide sent Gaínza a message inviting Guatemala to form part of the Empire.