The United States is able to function, after a fashion, as a union of 50 states of very different economic size and political complexion. Other federal states like Canada and Australia may be even better role models.
不那么联合的联合王国未必是一场灾难。美国就是由经济规模和政治状况截然不同的50个州组成的联盟，也能够差强人意的运行。加拿大和澳大利亚等其他联邦制国家或许是更好的榜样。