safety chain dog

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The safety chain dog system in roller coasters

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Indian hijras participate in a religious procession in Gandhinagar, India, some 30 kilometers from Ahmedabad, on March 22, 2017. Hijra is a term used in South Asia which refers to transgender individuals who are born male. (gender identity, gender expression)

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Flag of Bhutan

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Andrew Jackson delivering a speech while on his way to Washington, D.C., for his inauguration in 1829. From Harper's Weekly, 1881.

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Prince. musician Prince (Prince Rogers Nelson). Prince WELCOME 2 AMERICA tour. Exclusive North American Performances, 2010-11

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Bog body. Head of Tollund Man. Died at about age 30-40, Dated to about 280 BCE early Iron Age. Found Bjaeldskovdal bog Denmark in 1950 near Elling Woman. Most well preserved bog body to date. Human remains mummified in natural peat bogs. mummy, embalm

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Panama Canal infographic

Timeline and Map of the Panama Canal

Red Army (Soviet) soldiers in the Russian Revolution.

Russian Revolution Timeline

safety chain dog: Media

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The safety chain dog system in roller coasters

The safety chain dog system in roller coasters

Animation of the safety chain dog, a version of which was patented by American designer...

Video: Encyclopædia Britannica, Inc.