内蒙古自治区是新中国成立最早的少数民族自治区。1947年4月23日至5月3日,内蒙古人民代表会议在王爷庙(今兴安盟乌兰浩特市)召开,会议决定5月1日为内蒙古自治区成立纪念日,民族区域自治在全国第一个得以实现。内蒙古自治区成立之初时辖呼伦贝尔、纳文慕仁、兴 Inner Mongolia Autonomous Region is the earliest minority autonomous region newly established in China. From April 23 to May 3, 1947, the Inner Mongolian People’s Representative Meeting was held in Wangyemiao (now Xing’an League Wulanhaote) and the meeting decided that May 1 will be the anniversary of the founding of the Inner Mongolia Autonomous Region achieve. Inner Mongolia Autonomous Region was established at the beginning of the jurisdiction of Hulun Buir, Navi Mu Ren, Hing