Where was the dirt bike invented?

Answer 1

Most of the first motorcycles made were basically bicycles with an internal combustion engine strapped on somehow. These bikes were constructed just as "roads" were beginning to appear, so they were built to ride off road as well. Therefore, even the first motorcycles could be referred to as "dirt bikes". So dirt bikes (and street bikes) have been around since the dawn of motorycling, just at the time they were simply considered regular motorcycles.

So no one person invented the dirt bike. People began to modify their bikes to ride in the dirt, starting with knobby tires and better suspensions, changing gearing/sprockets, frames, doing everything possible to lighten and strengthen them, getting rid of parts not needed in dirt riding (lites, horn, etc.).

One of the first motorcycles designed specifically for offroad use was by Sigfried Bettmann of Coventry, England. The company name was Triumph Motorcycles and the year was 1914.
hahahahahaha
United States of America duhhhhh
It was invented in Kyle Crammer factory
I think in Germany or England.
If a two-wheeled vehicle with steam propulsion is considered a motorcycle, then the first one may have been American. One such machine was demonstrated at fairs and circuses in the eastern U.S. in 1867, built by Sylvester Howard Roper of Roxbury, Massachusetts.

See the related link for more information.