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"The Underground Railroad was used by people escaping enslavement in the South. This system of passages and safe houses helped people reach freedom in the Northern United States or Canada. Did you know science played a role in the Underground Railroad? Learn how people used the night sky to find their way north and much more!"--

Produktbeschreibung
"The Underground Railroad was used by people escaping enslavement in the South. This system of passages and safe houses helped people reach freedom in the Northern United States or Canada. Did you know science played a role in the Underground Railroad? Learn how people used the night sky to find their way north and much more!"--
Autorenporträt
Tammy Enz holds a bachelor's degree in civil engineering and a master's degree in journalism and mass communications. She teaches at the University of Wisconsin-Platteville and has written dozens of books on science and engineering topics for young people.