slavery was not an "invention"
the Gregorian calendar
Thomas Crapper was given credit for it but it was Sir John Harrington's idea.
The Gregorian calendar was an adaptation of a calendar proposed by Aloysius Lilius in 1582. However, the calendar is named after Pope Gregory XIII who introduced this calendar by a papal bull. It was a reform to the Julian calendar.
Properly speaking, there is no "English" calendar system. You probably mean the predominant Western Calendar (also called the Christian Calendar). This calendar system is best called the "Gregorian Calendar", after Pope Gregory XIII who introduced the calendar system in 1582.
Alana Goodie Inveted Texting
when and where computer first time inveted
Steve Jobs inveted apple computers. he inveted everthing apple
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i did
me
Skrellix
Japan.
a
1972
It is unknown.
galileo