what did richard arkwright contribute to the industrial revolution?
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 In 1787 , he came into contact with Thomas Clarkson and a group of anti @-@ slave @-@ trade activists , including Granville Sharp , Hannah More and Charles Middleton . They persuaded Wilberforce to take on the cause of abolition , and he soon became one of the leading English abolitionists . He headed the parliamentary campaign against the British slave trade for twenty years until the passage of the Slave Trade Act of 1807 . 

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 In October 1677 , Wheelwright sold his property in Lincolnshire , ( purchased of Francis Levett , gentleman ) to his son @-@ in @-@ law Richard Crispe , the husband of his youngest daughter , Sarah . In June 1679 , Wheelwright was given , following a much earlier recommendation , an assistant , the Reverend George Burroughs , who later became the only minister executed during the Salem witch trials . 

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 Richard Arkwright 's Masson Mill is now a working textile museum with the largest collection of bobbins in the world . 

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 Arkwright sought financial assistance , and Peter Nightingale – a local landowner ( and grand uncle of Florence Nightingale ) – bought the Cromford Estate for £ 20 @,@ 000 ( £ 2 million as of 2016 ) . Nightingale also built Rock House as a residence for Arkwright , overlooking the mill , and gave him a further £ 2 @,@ 000 ( £ 230 @,@ 000 ) to build the second mill and £ 1 @,@ 750 ( £ 200 @,@ 000 ) for workers ' housing . Between 1777 and 1783 , Arkwright and his family built mills at Bakewell , Cressbrook , Rocester , and Wirksworth , spread across Derbyshire and Staffordshire . Jedediah Strutt , who was Arkwright 's partner in the first Cromford Mill , built mills at Belper and Milford in 1776 – 1881 . Thomas Evans , a land over in Darley Abbey , bought a further 7 @.@ 1 ha ( 18 acres ) in the area around Darley Abbey at a cost of £ 1 @,@ 140 ( £ 130 @,@ 000 ) and in 1782 built a cotton mill in the village . Arkwright was paid royalties by those who had copied his machines , although some people risked prosecution by engaging in piracy . 

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 Most significant , however , was the development in 1776 of the industrial steam engine by James Watt and Matthew Boulton . Freeing for the first time the manufacturing capacity of human society from the limited availability of hand , water and animal power , this was arguably the pivotal moment of the entire industrial revolution and a key factor in the worldwide increases in productivity that would follow over the following century . 
