What does rainbow means in the history of human being?

Question

What does rainbow means in the history of human being?

Answer 1

It is Gods promise to humans that he will not flood the world again :)

Answer 2

that theres a pot of gold at the end of the rainbow

Answer 3

'The rainbow, a natural phenomenon noted for its beauty and inexplicability, has been a favorite component of mythology throughout history...Even before humans could communicate enough to teach and learn - we have wanted to understand the world around us, and understand the meaning and origin of life. Unable to do this, cultures developed a belief system, a history of their existence to satisfy this innate need for knowledge. It may be no wonder, that the rainbow—bright, elusive, and heavenly—plays a magical, otherworldly part in most ancient and modern belief systems around the world. Again we see the myriad of human belief concerning the rainbow. The complex diversity of rainbow myth is far-reaching; its inherent similarities are also. Whether as a bridge to the heavens, a messenger to the gods, divine archer’s bow, or mystic intangible entity, the rainbow persists as a multifaceted lesson. ...'

Answer 4

A pretty display in the sky.