Although a standard English is generally used in public and official communications and settings, there is a range of registers, such as those for journalism and for academic publishing. The distinction among registers also exists between the spoken and the written forms of SE, which are characterised by degrees of formality; therefore, Standard English is distinct from formal English, because it features stylistic variations, ranging from casual to formal. Furthermore, the usage codes of nonstandard dialects are less stabilized than the codifications of Standard English, and thus more readily accept and integrate new vocabulary and grammatical forms. Functionally, the national varieties of SE are characterized by generally accepted rules, often grammars established by linguistic prescription in the 18th century. English originated in England during the Anglo-Saxon period, and is now spoken as a first or second language in many countries of the world, many of which have developed one or more "national standards". English is the first language of the majority of the population in a number of countries, including the United Kingdom, the United States, Canada, Republic of Ireland, Australia, New Zealand, Jamaica, Trinidad and Tobago, the Bahamas and Barbados and is an official language in many others, including India, Pakistan, the Philippines, South Africa and Nigeria; each country has a standard English with a grammar, spelling and pronunciation particular to the local culture. As the result of colonisation and historical migrations of English-speaking populations, and the predominant use of English as the internationallanguage of trade and commerce, English has also become the most widely used second language. Countries in which English is neither indigenous nor widely spoken as an additional language may import a variety of English via instructional materials and thus considered it "standard" for teaching and assessment purposes. Typically, British English is taught as standard across Europe, the Caribbean, sub-Saharan Africa, and South Asia, and American English is taught as standard across Latin America and East Asia. This does, however, vary between regions and individual teachers. In some areas a pidgin or creole language blends English with one or more native languages.
Grammar
Although the standard Englishes of the anglophone countries are similar, there are minor grammatical differences and divergences of vocabulary among the varieties. In American and Australian English, for example, "sunk" and "shrunk" as past-tense forms of "sink" and "shrink" are acceptable as standard forms, whereas standard British English retains the past-tense forms of "sank" and "shrank". In South African English, the deletion of verbal complements is becoming common. This phenomenon sees the objects of transitive verbs being omitted: "Did you get?", "You can put in the box". This kind of construction is infrequent in most other standardized varieties of English.
Vocabulary
Spelling
With rare exceptions, Standard Englishes use either American or British spelling systems, or a mixture of the two. British spellings usually dominate in Commonwealth countries.