Where is gear for music based?

I'm curious to know, where does the gear for music actually originate from? Is it all made in factories with specialized equipment, or are there smaller workshops and artisans who create these instruments with their own hands? Are there specific regions or countries that are known for their expertise in crafting musical instruments? And what about the materials used - are there certain types that are preferred over others for creating the perfect sound? I'm eager to learn more about the fascinating world of music gear production.