Grammatical difference between British and American English

In the early part of the seventeenth century English settlers began to bring their language to America, and another series of changes began to take place. The settlers borrowed words from Indian languages for such strange trees as the hickory and persimmon, such unfamiliar animals as raccoons and woodchucks. Later they borrowed other words from settlers from other countries – for instance, chowder and prairie from the French, scow and sleigh from the Dutch. They made new combinations of English words, such as backwoods and bullfrog, or gave old English words entirely new meanings, such as lumber ( which in British English means approximately junk ) and corn ( which in British means any grain, especially wheat ). Some of the new terms were needed, because there were new and un-English things to talk about. Others can be explained only on the general theory that languages are always changing, and American English is no exception