At that young age, the focus of any martial art (and any reputable teacher) should be on fitness, self-confidence and staying safe, rather than focusing on how best to fight.
That being said, at age six the coordination of the upper body is still well ahead of the lower half. I would recommend a style that plays to that strength, such as kenpo or shotokan karate. But if the child has good balance and is so inclined, a leg-based style like Taekwondo isn't a bad alternative.
What I would stay away from, until the child is both stronger and more developed, are grappling arts such as judo and jiu-jitsu. They have a greater potential for both head injury and joint injuries, both of which would be detrimental to a growing child's physical development.
taekwondo
Nepali Martial Arts is 'Nepal Combat Art'. Style: Combat Jujitsu / Military Arts Nepal Khukuri Martial Arts (Khukuri, kukuri means nepali knife)
Martial arts is the study of warfare and the way of combat. Using a weapon is a martial art. The Marine Corps specifically includes the use of guns and knives in their fighting style.
I would suggest contacting them to find out.
The Taoists are given credit for creating Tai Chi Chuan which is an internal martial arts style.
taekwondo
brazillian ji jitsu or muay tai tai
It would be very difficult to do so. You can certainly copyright any literature or videos associated with a style or form, but preventing someone from doing it would be impossible.
the best chinese martial art in my opinion is wing chun kung fu and the best martial arts teacher of this style would either be ip man or sum nung
Harry Styles does not do martial arts, but does practice a military-style fitness regime.
Nepali Martial Arts is 'Nepal Combat Art'. Style: Combat Jujitsu / Military Arts Nepal Khukuri Martial Arts (Khukuri, kukuri means nepali knife)
Martial arts is the study of warfare and the way of combat. Using a weapon is a martial art. The Marine Corps specifically includes the use of guns and knives in their fighting style.
I would suggest contacting them to find out.
A style of martial arts
No, kung fu is a specific style of a martial art.
I believe it is based on nin-jutsu although there are a few hints of tae-kwon-do and karate
You don't choose the style, the style chooses you.