In the midst of this civil strife, the Sioux (soo) Indians became dissatisfied with the Indian traders, and the nonpayment of the money due them. Bands of warriors under Little Crow and other chiefs perpetrated horrible massacres in Minnesota, Iowa, and Dakota. Over seven hundred whites were slain, and many thousands driven from their homes. Col. Sibley, after a month's pursuit of the savages, routed them, and took five hundred prisoners. Thirty-nine were hung on one scaffold, at Mankato, Minn. 1863. THE SITUATION.--The plan of the war was the same as in the preceding year, but included also the occupation of Tennessee. The Federal army was about seven hundred thousand strong; the Confederate, not more than half that number. The Emancipation Proclamation was issued at the opening of the year. THE WAR IN THE WEST. THE SECOND EXPEDITION AGAINST VICKSBURG.--Grant continued his great task of opening the Mississippi. After several weeks of fruitless effort against Vicksburg upon the north, he marched down the west side of the river, while the gunboats, running the batteries, passed below the city and ferried the army across. Hastening forward, he defeated the Confederate advance under Pemberton, at _Port Gibson_ (May 1). [Footnote: The running of the batteries with transports was considered so hazardous that the officers would not order their crews to take the risk, but called for volunteers. So many privates offered, that they were compelled to draw lots. One boy, drawing a lucky number, was offered $100 for his chance, but refused it, and lived to tell the story. The gauntlet of batteries extended eight miles. The first gunboat crept silently down in the shadow of the trees which lined the bank. The Confederates at Vicksburg discovering the movement, kindled a bonfire which lighted up the whole scene, and made the other vessels a fair target for their gunners.] [Illustration: VICINITY OF VICKSBURG.]