What is the popular martial arts in the world?

What is the popular martial arts in the world?
It might be difficult to determine what is the most popular world wide, but several stand-outs include Taekwondo (gaining full Olympic status in 2000), Judo (already an Olympic event), various forms of Karate, jujutsu (and various forms including Brazilian, Kung fu, and capoeira. Some people consider Boxing and Wrestling to be in the Martial Art category, but certainly not by the widely accepted philosophy of combat warrior training combined with mental and spiritual development with a warrior's code as a way of life.

Some might think that the most popular martial art is MMA, or "Mixed Martial Arts," however that is not an established Martial Art in and of itself. It is a "concept" of blending fighting skills, tactics, and techniques borrowed from a variety of recognized Martial Art systems. MMA might be popular as a sport, but even sport Taekwondo, Karate or judo is not the Martial Art itself. They are games played under rules, and help to make the actual Martial Art they represent and come from more popular and well-known. MMA doesn't come from one Martial Art system, and neither does Bruce Lee's Jeet Kune Do. They are concepts outside of the standard Martial Art curriculum.