Mercury Retrograde is not a "creation". It's an astronomical phenomenon where it appears from Earth that Mercury is moving backwards in its orbit.

This apparent retrograde motion happens several times a year because of the different speeds at which Mercury and Earth orbit the Sun.

So, Mercury Retrograde didn't have a "creation" date; it's a natural event that has always occurred.

However, the association of Mercury Retrograde with bad luck and communication issues is a much more recent phenomenon, popularized in astrology. This association likely started in the 20th century and gained traction with the rise of the internet.