He will say so, and you may disagree with him too - politely, of course!
你也可能会不同意他的看法——当然,你应该礼貌地告诉他。
From 1830 onwards in the USA and from about 1870 in Canada, settlers began to move westwards and to take possession of the plains as their own.
美国自1830年起,加拿大从1870年左右起,殖民者开始向西迁移,并把平原据为己有。