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Which of the Mongol Khans conquered Rus' in 1236?
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Scientific Journal
A publication intended to further the progress of science, typically by reporting new research.
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A methodical way of investigating phenomena, acquiring new knowledge, or correcting and integrating previous knowledge based on empirical evidence and observation.
Ruling Out
In research, this refers to the process of eliminating alternative explanations for observed effects, strengthening the causal inference.
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