Florida and texas By abbyml11 May 7, 1821 Florida becomes American Territory Florida becomes new territory May 7, 1836 Battle of the Alamo; Texas becomes independent Battle of the Alamo; Texas becomes independent May 7, 1839 Florida applies to become a state Florida applies to become a state May 7, 1845 Florida and Texas become states Florida and Texas become states May 7, 1846 Congress declares war on Mexico Congress declares war on Mexico