Babis was a planet thirty thousand lightyears from Coruscant. As one of Palpatine's decisions while Chancellor, he moved a copy of the Great Library over to the planet. It was such a complete library that two task forces were always on hand to assist in case of an information dump.
After Thrawn died, it became a natural boundary line between the Empire and the New Republic. This was what brought it into conflict. It was a natural crossroads for combat.
Babis incurred the wrath of Merno Sardonis during the Babis Raid when they resisted the information dump he pulled. After the destruction of the two strike forces, Sardonis order Babis wiped out. The Massacre of Babis was the fourth worst atrocity of the Galactic Civil War.