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Restrictions of jobs under a certain age. Meaning children under a certain age can't do certain jobs.
In response to the horrors of World War II, the UN drafted the "Universal Declaration of Human Rights" which outlined that bare minimum way in which prisoners and other civilians could be treated by the enemy in times of war.
The spread of Islam, from its heartland in the Middle East and North Africa to India and Southeast Asia, revealed the power of the religion and its commercial and sometimes military attributes.