German Chancellor Angela Merkel says her country is facing “big challenges,” as it marks 25 years of reunification.<br /><br /> Speaking on the sidelines of official celebrations in Frankfurt, she renewed here call for European and global unity to deal with the recent influx of migrants.<br /><br /> More than 200-thousand people arrived in Germany last month alone. <br /><br /> “Today, 25 years on, we’re facing big challenges. The refugee issue keeps us particularly busy these days,” said Merkel.<br /><br /> “Germany cannot solve this problem on its own, only together, in Europe, and through a fair distribution of tasks. Also worldwide.”<br /><br /> After an ecumenical church service at Frankfurt cathedral to mark the reunification anniversary, an official ceremonial event took place at the Alte Oper Frankfurt, attended by 1,500 guests. <br /><br /> Merkel, Bundestag President Norbert Lammert and several federal ministers were among them. <br /><br /> Celebrations were also due to take place in front of the parliament building in Berlin. <br /><br /> The German Da
