Yes, they were invented 1000's of years ago. Other cultures followed.
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Built pyramids.
They made the 365 day calendar
the egyptians were interseted in math and science mainly for their practical applications. Rather than trying to understand how the world worked, they used science and math as tools to improve their lives.
about 300,000,000,000-400,000,000,000 pyramids in the whole world
Egyptians