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A 1.00-g sample of carbon from a modern source gave 15.3 disintegrations per minute.A sample of carbon from a presumably old source gave 920 disintegrations per hour.What is the age of the "old" sample of carbon? The half-life of carbon-14 is 5.73 * 103 yr.
Plantations
Large agricultural estates typically found in the Americas that specialized in the cultivation of cash crops like sugar, cotton, and tobacco, often relying on slave labor.
Professional School
An institution of higher education focused on teaching students the skills and knowledge needed for specific professional careers, such as law, medicine, business, or engineering.
Factory Jobs
Factory jobs involve work in manufacturing settings, where individuals are employed in the mass production of goods.
Black Freedom
The struggle and movement towards achieving civil rights, equality, and liberty for African Americans, particularly post-emancipation and during the Civil Rights Movement.
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