Probably the pickups. Earlier Guitars have single coil pickups which give a little more feedback in overdrive, but newer guitars have humbuckers that improve on less feedback and better tone and clarity. That's if the guitars are electric. If they were acoustic, the changes would probably be lesser. Maybe just changes in structure that would have a better sound overall than earlier versions.
The difference between early tools and modern tools is that early tools were made from stone but modern tools are made from metals.
well back in the day they used vintege style guitars like rickenbacker(however you spell that) or east wood and a lot of guitars were odly shapped because companies were stil experementing to see what would sell Besides the Ricky he played in the early days he was also fond of the Epiphone Casino.
one is early and one is late
well
Ibanez has been selling electric guitars since the early 1960's. It is a Japanese brand of guitars selling guitars, basses, and electronics as well as accesories.
therer is no he or ye
The early English settlers profited mostly from agriculture.
gummy bears
physical changes that began to occur in early adulthood become noticeable in middle adulthood.
The acoustic guitar became more popular in early 20th century America, and and guitar-makers began building louder guitars. All of the above -Apex
In general, there are none. Some research has hinted that there may be differences in the hypothalamus, and other research has hinted that there are differences in finger length, but these studies are early and need more work.
Doctrine in the early Christian church helped unify the people by helping them to understand the differences between Judaism and the new form of Christianity - Roman Catholic.