Tagalog is one of the major languages of the Republic of the Philippines. It is the most spoken Philippine language in terms of the number of speakers. Tagalog, as its de facto standardized counterpart, Filipino, is the principal language of the national media in the Philippines. It is the primary language of public education. As Filipino, it is, along with English, a co-official language and the sole national language. Tagalog is widely used as a lingua franca throughout the country, and in overseas Filipino communities. However, while Tagalog may be prevalent in those fields, English, to varying degrees of fluency, is more prevalent in the fields of government and business. Tagalog History The word Tagalog derived from tagá-ílog, from tagá- meaning "native of" and ílog meaning "river", thus, it means "river dweller." There are no surviving written samples of Tagalog before the arrival of the Spanish in the 16th century. Very little is known about the history of the language. However, according to linguists such as Dr. David Zorc and Dr. Robert Blust, the Tagalogs originated, along with their Central Philippine cousins, from northeastern Mindanao or eastern Visayas The first known book to be written in Tagalog is the Doctrina Cristiana (Christian Doctrine) of 1593. It was written in Spanish and two versions of Tagalog; one written in Baybayin and the other in the Latin alphabet. Throughout the 333 years of Spanish occupation, there have been grammars and dictionaries written by Spanish clergymen such as Vocabulario de la Lengua Tagala by Pedro de San Buenaventura (Pila, Laguna, 1613), Vocabulario de la lengua tagala (1835) and Arte de la lengua tagala y manual tagalog para la adminstración de los Santos Sacramentos (1850). Poet Francisco "Balagtas" Baltazar (1788-1862) is regarded as the foremost Tagalog writer. His most famous work is the early 19th-century Florante at Laura. In 1937, Tagalog was selected as the basis of the national language by the National Language Institute. In 1959, Tagalog, which had been renamed Wikang Pambansa ("National Language") by President Manuel L. Quezon in 1939, was renamed by the Secretary of Education, Jose Romero, as Pilipino to give it a national rather than ethnicity label and connotation. The changing of the name did not, however, result in better acceptance at the conscious level among non-Tagalogs, especially Cebuanos who had not accepted the selection. In 1971, the language issue was revived once more,and a compromise solution was worked out — a ‘universalist’ approach to the national language, to be called Filipino rather than Pilipino. When a new constitution was drawn up in 1987, it named Filipino as the national language. The constitution specified that as that Filipino language evolves, it shall be further developed and enriched on the basis of existing Philippine and other languages. .

Vietnamese , formerly known under the French colonization as Annamese (see Annam), is the national and official language of Vietnam. It is the mother tongue of the Vietnamese people , who constitute 86% of Vietnam's population, and of about three million overseas Vietnamese, most of whom live in the United States. It is also spoken as a second language by some ethnic minorities of Vietnam. It is part of the Austroasiatic language family, of which it has the most speakers by a significant margin (several times larger than the other Austroasiatic languages put together). Much vocabulary has been borrowed from Chinese, and it was originally written using the Chinese writing system. The Vietnamese writing system in use today is an adapted version of the Latin alphabet, with additional diacritics for tones and certain letters. Vietnamese was identified more than 150 years ago to be part of the Viet-Muong (or Vietic) grouping of the Mon-Khmer branch of the Austroasiatic language family, a family that also includes Khmer, spoken in Cambodia, as well as various tribal and regional languages, such as the Munda languages, spoken in eastern India, and others in southern China. Even though this is supported by etymological comparison , some linguists still believe that Viet-Muong is a separate family, genealogically unrelated to other Mon-Khmer languages. The ancestor of the Vietnamese language was originally based in the area of the Red River in what is now northern Vietnam, and during the subsequent expansion of the Vietnamese language and people into what is now central and southern Vietnam , Vietnamese was linguistically influenced primarily by Chinese, which came to predominate politically in the 2nd century B.C.E. With the rise of Chinese political dominance came radical importation of Chinese vocabulary and grammatical influence. As Chinese was, for a prolonged period, the only medium of literature and government, as well as the primary written language of the ruling class in Vietnam, much of the Vietnamese lexicon in all realms consists of Hán Vi?t (Sino-Vietnamese) words. In fact, as the vernacular language of Vietnam gradually grew in prestige toward the beginning of the second millennium, the Vietnamese language was written using Chinese characters adapted to write Vietnamese, in a similar pattern as used in Japan (kanji), Korea (hanja), and other countries in the Sinosphere. As contact with the West grew, the system of Romanized writing was developed in the 17th century by Portuguese and other Europeans involved in proselytizing and trade in Vietnam. When France invaded Vietnam in the late 19th century, French gradually replaced Chinese as the official language in education and government. Vietnamese adopted many French terms. In addition, many Sino-Vietnamese terms were devised for Western ideas imported through the French. However, the Romanized script did not come to predominate until the beginning of the 20th century, when education became widespread and a simpler writing system was found more expedient for teaching and communication with the general population.