Official language after unifying the country in 221 BC. Classical Chinese would remain the standard written language for the next 2000 years. Standardization of the spoken language received less political attention, and Mandarin developed on an "ad hoc" basis from the dialects of the various imperial capitals until being officially standardized in the early twentieth century. According to an undated chart by the American pro-English-only organization known as U.S. English, 178 countries have an official language at the national level. Among those, English is the most common with 67 nations giving it official status. French is second with 29 countries, Arabic is
Tonga language (Zambia and Zimbabwe) zone N15, is not particularly close to Zambian Tonga, which is classified as zone M64, and can be considered a separate language. The Tonga-speaking inhabitants are the oldest Bantu settlers, with the Tumbuka, a small ethnic group in the east, in what is now known as Zambia. There are two distinctive dialects of Tonga; Valley Tonga and Plateau Tonga. Valley Tonga is mostly spoken in the Zambezi valley and southern areas of the Batonga (Tonga people) while Plateau Tonga is spoken more around Monze District and the northern areas of the Batonga. Tonga (Chitonga or iciTonga) developed as a spoken