What did the tribes manage to maintain throughout treaty negotiations? More than one answer may apply.

negotiated treaties between tribes and the U.S. had to be approved by ... of individual tribes within the U.S. as independent nations

aug 15, 2012 - although van leeuwenhoek was not the inventor of the microscope, he advanced it more he loved to grind and focus a new lens in order to see the unseen world. most of leeuwenhoek's microscopes were silver. in a simple but significant experiment (1668), he demonstrated that worms found on

he is known for discovering   the fossil of a female hominin australopithecine   known as "lucy" in the afar triangle region of hadar, ethiopia.

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