Answer:The oldest nonstop tradition in the world is known as the Armenian Apostolic Church's Eternal Flame, which has been continuously burning for over 1,700 years. It represents the uninterrupted Christian faith and devotion of the Armenian people, dating back to the church's establishment in 301 AD when Armenia became the first nation to adopt Christianity as its state religion. The tradition of the eternal flame symbolizes the enduring spirit and religious commitment of the Armenian church and people.