Derailleur gears a detent or ratchet mechanism which stops the gear lever, and hence the cable and the derailleur, after moving a specific distance with each press or pull. Indexed shifters require re-calibration when cables stretch and parts get damaged or swapped. On racing bicycles, 10-gear rear cassettes appeared in 2000, and 11-gear cassettes appeared in 2009. Most current mountain bicycles have either. Many modern, high-end mountain bikes have begun using entirely one chain ring drivetrains, with the industry constantly pushing the number of rear cogs up and up, as shown by SRAM's Eagle groupsets (1 by 12) and Rotor's recent 1
Influence of French on English states like New-Brunswick, Quebec, Ivory Coast, Benin, Togo, Guinea, Cameroon, Congo, Democratic Republic of the Congo, Madagascar, Mauritius, Tchad, Djibouti, Senegal, Morocco, Algeria, Tunisia, Lebanon, France, Belgium, Switzerland, Luxembourg, Monaco, Aosta Valley, French Polynesia, New Caledonia, and Vanuatu adopting it as their official language. This geographical diversity has led to many different contacts with vernacular dialects, regional and international languages, from which French has often been enriched locally. In a number of countries and regions where French shares co-officiality with English (Cameroon, Canada, Jersey, Mauritius, Rwanda, Vanuatu), particular lexical regionalisms are observed where French and English terms are used interchangeably.