Most distributors are based in the US with the exception of large integrated circuits that are made in a variety of countries where those companies do fabrication (US, Taiwan, South Korea, Japan); an example is the NXP CPU we use from their fabrication in South Korea.

Boards:

M.2 Modem Module China, inquire for USA/EU options

M.2 WiFi/BT Module India, inquire for more options

It's not going to win the market, but I applaud anyone providing more choices.