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BBC
Bbc: Bitesize: How Was Anglo Saxon Britain Ruled?
Anglo-Saxon Britain was divided into five kingdoms each ruled by a different king. Learn about the different classes in Anglo-Saxon society, the laws, and what happened when the Vikings invaded.
Smithsonian Institution
Smithsonian National Zoo: Classification Systems
A great overview of the science of classification. Topics addressed include summaries of the five kingdoms, the seven taxa, the definition of a species and the classification of the panda.
Smithsonian Institution
National Museum of American History: Parthia: The Forgotten Empire
The Parthian Empire lasted for five hundred years and have been mostly forgotten, despite their prowess in the Middle East. Their kingdom began in 247 BC when Arsaces I was elected as King of Parni. They were the only civilization that...