When were all the confederate states admitted back into the union?

The former Confederate States were readmitted to the Union in various years after the end of the Civil War. In order to rejoin the United States, the southern states had to follow certain guidelines and ratify the 13th, 14th, and 15th Amendments to the Constitution. To learn more about this, you may refer to http://www.sparknotes.com/testprep/books/sat2/history/chapter11section3.rhtml The actual order and years the states were formally admitted into the Union again are as follows: Tennessee July 24. 1866 Arkansas June 22, 1868 Louisiana, Florida, North Carolina, and South Carolina June 25, 1868 Alabama July 14, 1868 Virginia January 26, 1870 Mississippi February 23, 1870 Texas March 30, 1870 Georgia July 15, 1870 Dates and order taken from http://www.pbs.org/wgbh/amex/reconstruction/states/sf_timeline.html and http://www.pbs.org/wgbh/amex/reconstruction/states/sf_timeline2.html