Since the turn of the 2nd century, the Frankfurt fair has been held every fall and had become the most important fair site in Europe. Frankfurt's countless publishing houses as well as its fur industry profited from the elimination of Leipzig by the division of Germany into East and West. After the war, the West German book fair was held in Frankfurt. Since German reunification, the Frankfurt Book Fair is held in the fall, and Leipzig's in the spring. The bi-annual Internationale Automobil-Ausstellung is a worldwide car fair that is also held in Frankfurt.