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Home Q & A Board Science-Related Homework Help Physics
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symbo symbo
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7 years ago
The present-day calendar, which includes leap years and century year exclusion, was introduced by
A)   Karl Marx in 1917.   C)   Ptolemy in the second century, B.C.
B)   Julius Caesar in 50 B.C.   D)   Pope Gregory XIII in 1582.
Textbook 
Discovering the Universe

Discovering the Universe


Edition: 7th
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discovererdiscoverer
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symbo Author
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6 years ago
This did it for me! Thank you
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