What qualifies an instrument to be a world instrument?

instruments that are from under developed countries

instruments that are from Africa and Asia

instruments that are outside the classical genre

instruments that are from Canada

There isn't a strict definition of what qualifies an instrument to be a "world instrument," but typically it refers to instruments that have origins in various cultures and regions around the world. This can include instruments from underdeveloped countries, Africa, Asia, and other regions outside of the Western classical music tradition. Instruments from Canada could also be considered world instruments if they have cultural significance or are used in traditional music from specific indigenous communities.