WARSAW, Poland (AP) – Poland is celebrating the 100th anniversary of its rebirth as an independent state on Sunday with a multitude of events across the country, including marches, Masses, and the national hymn being sung in more than 600 public places. The national white-and-red flag fluttered from buildings and buses, dignitaries and regular citizens placed flowers and wreaths at memorials to the father of Polish independence, Marshal Jozef Pilsudski, and the historic Sigismund Bell, reserved only for the most important national events, rang out over Krakow. Poland regained its independence at the end of World War I in...