Nepal is an outlier when it comes to flag shape, as it stands out from the norm (rather “two triangles stacked on top of each other”) since according to them: the flag represents Himalaya Mountains & both religions: Hinduism & Buddhism, also the red triangular flag has been a Hindu symbol of victory since the writing of Ramayana and Mahabharata.
That is in contrast to most countries flags as a majority are rectangular in their shape (no matter where from USA, UK, Canada, Japan, Germany, Poland, etc.). I mean, why are most flags rectangle by default rather than being unique on using another shape? I mean, Nepal is the only country where a flag is designed from another shape that differs from a rectangle.
What do you mean “since the time of”?. They were mythological fictional writings based on the area.
You mean since their writing?
It is argued that the powers they posses are mythological but the figures actually existed as kings and princes of that era. But there is no conclusive evidence of it as Indians in general were not great at recording their history and whatever they did record (which was still a lot) was kept in Nalanda which was burnt by invaders.
And Jesus and Allah are myths, you say?