Answer: The first guitar was made in 1850, and changed from acoustic to electric by the 1940.
Step-by-step explanation:
Hi, the first guitar was made in 1850 by the Spanish musician and luthier Antonio Torres Jurado.
The Spanish guitar was an acoustic guitar, later it morphed into an amplified guitar in the hands of Rickenbacker. But it had issues with feedback because of their hollow body.
In 1940 Les Paul changed the history creating the first solid-body electric guitar, that is the most common electric guitar in present time.
Feel free to ask for more if it´s necessary.