History of the Slovak language ). The usage of Czech in Slovak environment resulted to the Slovakized Czech language - a variant of cultural Czech with Slovak elements. This variant existed since the penetration of Czech to present-day Slovakia and was used e.g. in city books, official correspondence, etc. Early writings had a various frequency of Slovak elements caused by a poor knowledge of standard Czech among many Slovak native speakers, the influence of vernacular language and cultural Slovak. The normalized form of Slovakized Czech existed since the 17th century. In the normalized form, Czech letters and words were systematically replaced by their Slovak equivalents.
International Mother Language Day holiday in the country since 1953, it is also known as Shohid Dibôsh (Martyr Day). On 17 November 1999, the UNESCO General Conference recognized 21 February as International Mother Language Day. Bangladeshis organize social gatherings honoring their language and culture, hold literary competitions, draw alpana on the roads, eat festive meals and listen to songs. International Mother Language Day was introduced to the Canadian Parliament for recognition by Matthew Kellway on February 5, 2014 as a private member's bill, C-573. In 2015, British Columbia and Manitoba issued proclamations observing International Mother Language Day on 21 February. Edmonton observed International Mother