Franklin Mint – History of the US – Texas Annexed as State – 1845 – 45mm – Proof Bronze Medal. Mar. 1 – Joint resolution of Congress for annexation of Texas is approved. Mar. 4 – James K. Polk inaugurated as President. April – Elias Howe invents workable sewing machine. Oct. 10 – U.S. Naval Academy founded at Annapolis. Dec. 29 – Texas enters Union.