These rules would become the cause of growing controversy as international entries to Henley increased; most foreign countries having a different definition of amateur. The adoption of Henley's definition of amateur by the Amateur Rowing Association of Great Britain would also cause a 66-year schism in British rowing, when in 1890 a rival National Amateur Rowing Association was set up, with a less restrictive definition of amateurism under which persons who worked in manual labour as their occupation could still be considered amateur rowers.