Final answer:
The origins of many modern bowed string instruments can be traced back to Italy, known for crafting instruments like violins and guitars. Resonance in these instruments involves standing waves in both the strings and the air inside the instrument's body. Guitar strings have evolved from gut to steel and nylon, suiting different musical styles.
Step-by-step explanation:
The string instruments that formed the basis for many modern bowed instruments originated in Italy. The earliest recorded European bowed string instrument was the Byzantine lyra, a precursor to many modern stringed instruments. Italy, especially during the Renaissance, was a significant contributor to the development and crafting of string instruments such as violins and guitars that are still prevalent in classical and folk music today.
Regarding resonance in string instruments, when a musician stands outside in a field and plucks a string on an acoustic guitar, standing waves are most likely to occur in the guitar string and the air inside the guitar. These components are essential in the production and amplification of sound in acoustic string instruments.
Guitar strings have evolved over time from being made out of animal intestines and silk to modern steel and nylon strings, which reflect advancements in materials and musical tastes. Steel strings are popular on acoustic and electric guitars for their bright sound, whereas nylon strings are preferred on classical guitars for their softer tone quality.