English has spread globally through colonialism and become an international lingua franca. There are standard forms of English in Britain and America but many variations have developed in former colonies based on local socio-political conditions. Major differences exist between English varieties in vocabulary, pronunciation, spelling, and grammar depending on the history and languages of influence in each country or region. Varieties include Australian English, New Zealand English, Canadian English, South African English, Indian English, and more, each with their own distinguishing characteristics compared to other forms of English.