Here is a link to the history of Anhalt from old to modern times, covering a time line with maps, Martin Luther, the reformer, Magdeburg law and Sachsenspiegel, religious refugees, the Prussian province Saxony, prominent personalities, etc.
http://www.zeitstrahl.bildung-lsa.de/nav_arbeitsmat.htm
http://www.anhalt-geschichte.de/index.php?page=land-norkitten
A shortenend version of the history of Sachsen Anhalt can be found here
http://en.wikipedia.org/wiki/Saxony-Anhalt and here http://wiki-en.genealogy.net/Anhalt
http://www.genealogy.net/reg/SAC-ANH/hist-san.html