Who is credited with developing the foundational, steerable, two-wheeled personal vehicle in the early 19th century?

Answer

Karl Freiherr von Drais

The German inventor Karl Freiherr von Drais is specifically credited with this foundational step into modern cycling, presenting his steerable, two-wheeled vehicle in 1817.

Who is credited with developing the foundational, steerable, two-wheeled personal vehicle in the early 19th century?
inventordesignmachinepedalbicycle