The Nobel prize for 2012 was awarded to the European union because .?

The formation of the European Union helped countries in Europe to get on better with each other, reducing the risk of wars, like World War I and World War II, which had happened in Europe. The Nobel Peace Prize 2012 was awarded to European Union and it was said that it was "for over six decades contributed to the advancement of peace and reconciliation, democracy and human rights in Europe".