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Phrasal verb light up | light something up to become or to make something become bright with light or colour There was an explosion and the whole sky lit up.
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Born into slavery in Maryland, Harriet Tubman escaped to freedom in the North in 1849 to become the most famous "conductor" on the Underground Railroad. Tubman risked her life to lead hundreds of family members and other slaves from the plantation system to freedom on this elaborate secret network of safe houses.
