Celebrations have been held after midnight to mark nine new states joining a European border-free zone. The Schengen agreement, which allows passport-free travel across the area, now embraces 24 nations. Some 2,000 people celebrated with the EU anthem, Beethoven's Ode to Joy, and fireworks in the town of Frankfurt on Oder at Germany's border with Poland. The Czech Republic, Estonia, Hungary, Latvia, Lithuania, Malta, Poland, Slovakia, Slovenia joined the zone. See map of Schengen area German Chancellor Angela Merkel and Polish PM Donald Tusk will mark the event on Friday morning in the town of Zittau, near the point where...