 In the period of 1834–60, 290,000 Indian labourers arrived.The pool of labour proved to be so large that, for the next 67 years, indentured contracts were limited to only one year.This sugar revolution led to an increase in volume production, making Mauritius the most important sugar-producing British colony, its sugar export accounting for 7.4 percent of the world's total production by the 1850s.