Who invented gadgets and what country are they?

The term "gadgets" refers to various small mechanical or electronic devices, and it is difficult to attribute their invention to a single person or country. Innovations that can be classified as gadgets have originated from many inventors worldwide, with significant contributions from countries like the United States, Japan, and Germany. Notable figures in gadget invention include Thomas Edison and Nikola Tesla from the U.S., who developed numerous devices that laid the groundwork for modern technology. Overall, gadgets are a collective result of global innovation rather than the creation of a single inventor.