Answer:
The pharaoh that started the trend of building pyramids was Djoser.
Step-by-step explanation:
At the beginning of the Third Dynasty (circa 2700 BC) the first stepped pyramids were built. Those were constituted with several steps, by way of a "gigantic staircase" that rose to the sky.
The first and most famous of these is the stepped pyramid of Saqqara of Pharaoh Djoser, whose architect was Imhotep, who possibly wanted to create a monument that rose to the sky, like a gigantic staircase, in order to symbolize the ascension from the deceased of the "underworld" to the "Heavens."