Problem: In their attempt to ensure white supremacy decades after emancipation, in the early 20th century, most southern states created laws based on the one-drop rule, defining as black, persons with any known African ancestry. This was a stricter interpretation than what had prevailed in the 19th century; it ignored the many mixed families in the state and went against commonly accepted social rules of judging a person by appearance and association. Some courts called it "the traceable amount rule." Anthropologists called it an example of a hypodescent rule, meaning that racially mixed persons were assigned the status of the socially subordinate group.
What was the rule in the 1800s called?
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Answer: the traceable amount rule


Problem: The three latest satellites will jointly undergo testing of a new system of navigation signaling and inter-satellite links, and start providing navigation services when ready.
How many terminals will be undergo testing of the new system?
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Answer: unanswerable


Problem: After World War II, due to Ukrainian collaborationism with the Axis powers in an attempt to gain independence, Moscow changed its policy towards repression of the Ukrainian language.
Who was in collaboration with Moscow?
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Answer:
unanswerable