...nder General Heredia in the pass of Sacramento......Feb. 28, 1847 First line of telegraph between East St. Louis and the East completed......Dec. 20, 1847 Decision of the Supreme Court of the United States upon the northern boundary is confirmed by Congress, and the present boundary established by act......Feb. 15, 1848 Claiborne F. Jackson, on Jan. 15, 1849, introduces resolutions in the State Sen...