evidence: "I was happy, my town was bigger," David Lavaux, Mayor of the Belgian village of Erquelinnes, told a French TV station. "But the Mayor of Bousignies-sur-Roc didn't agree." Bousignies-sur-Roc is a commune on the French side of the border, which was established in 1820 after the Battle of Waterloo, which was fought in Belgium. [...] "We should be able to avoid a new border war," Bousignies-sur-Roc Mayor Aurélie Welonek told French media. "Our two countries get along well, so there were no great concerns at this point."