加拿大和美国是山水相连的北美邻国。两国有不少相似之处:它们都曾是大英帝国的前殖民地,英语均是官方语言(之一),人口构成都含多种族裔,两国都幅员辽阔(从大西洋到太平洋)、经济发达,等等;但它们的不同之处却更明显:美国在十八世纪下半叶与宗主国英国开战而获得独立,而加拿大以“自治领”立国(一八六七)获不完全独立则比美国晚了几乎一个世纪,而且直到一九三一年才成为与英国平等的英联邦国家之一。迄今,美国已 Canada and the United States are landscaped North American neighbors. There are many similarities between the two countries: they used to be the former colonial territories of the British Empire, with English as the official language (one of them), a multi-ethnic population comprising both countries with vast territory (from the Atlantic to the Pacific), a developed economy, But the difference is more obvious: the United States won its war with the sovereign United Kingdom during the second half of the 18th century, and Canada became less independent than its independence (1867) It was almost a century later for the United States, and it was not until 1931 that it became one of the Commonwealth countries that equals the United Kingdom. So far, the United States has