If refer to nations whin ancient nations,therefore,Sumerian,Hittie,Babylon,Greece,Iran and Syria are the different ancient civilizations which are much earlier(or almost the same) than ancient China.

• 如果要说“古国”之“国”，那么，古代“苏美尔、米诺斯、赫梯、巴比伦、希腊、伊朗、叙利亚”都是不同的“国”，都是比古中国更早（或几乎同时）的“文明古国”。