Answer:
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The 1819 Act was enacted to limit the number of hours children work in factories (12 hours and no night working) and the abolishion of employment of children less than 9 years old. This was necessitated by the negative impact of the factories' conditions on these children's long-term health, during a time when children were allowed to work.
There are no choices given for this question but here is an answer to it. Groups of flowering plants like Magnoliidae, Hamamelidae, and Rosidae formerly belonged to dicotyledons are now members of the eudicots after dicots are classified as paraphyletic.