Why did the Egyptians build pyramids?

Why did the Egyptians build pyramids?

ANS: The pyramids of ancient Egypt were funerary edifices. They were built over a period of 2,700 years, ranging from the beginning of the Old Kingdom to the close of the Ptolemaic Period; but the time at which pyramid building reached its acme, the pyramid age par excellence, was that commencing with the 3rd dynasty and ending with the 6th (c. 2686-2345 BC). During those years the pyramid was the regular type of royal tomb. ---From encyclopaedia britannica