<P> Besides the obligation, many children had to help support their families financially; another factor that influenced child labour was the demographic changes that occurred in the eighteenth century . By the end of the eighteenth century, 20 percent of the population was made up of children between the ages of 5 and 14 . Due to this substantial shift in available workers, and the development of the industrial revolution, children began to work earlier in life in companies outside of the home . Yet, even though there was an increase of child labour in factories such as cotton textiles, there consistently was large numbers of children working in the field of agriculture and domestic production . </P> <P> With such a high percentage of children working, the rising of illiteracy, and the lack of a formal education became a widespread issue for many children who worked to provide for their families . Due to this problematic trend, many parents developed a change of opinion when deciding whether or not to send their children to work . Other factors that lead to the decline of child labour included financial changes in the economy, changes in the development of technology, raised wages, and continuous regulations on factory legislation . </P> <P> The first legal steps taken to end the occurrence of child labour was enacted more than fifty years ago . In 1966, the nation adopted the UN General Assembly of the International Covenant on Economic, Social and Cultural Rights . This act legally limited the minimum age for when children could start work at the age of 14 . But 23 years later in 1989 the Convention on the Rights of Children was adopted and helped to reduce the exploitation of children and demanded safe working environments . They all worked towards the goal of ending the most problematic forms of child labour . </P> <P> Significant levels of child labour appear to be found in Cambodia . In 1998, ILO estimated that 24.1% of children in Cambodia aged between 10 and 14 were economically active . Many of these children work long hours and Cambodia Human Development Report 2000 reported that approximately 65,000 children between the ages of 5 to 13 worked 25 hours a week and did not attend school . There are also many initiative and policies put in place to decrease the prevelence of child labour such as the United States generalized system of preferences, the U.S. - Cambodia textile agreement, ILO Garment Sector Working Conditions Improvement Project, and ChildWise Tourism . </P>

When did child labour became illegal in the uk
find me the text answering this question