When was the first pedal drive bicycle developed?

The first pedal drive bicycle was developed in 1839 by Kirkpatrick Macmillan, a Scottish blacksmith. This innovation marked a significant advancement in transportation technology, transitioning from the earlier hobby horses and draisiennes that were propelled by walking or running. The introduction of pedals allowed for greater efficiency and speed, fundamentally changing personal mobility.

The development in 1839 set the stage for later advancements in bicycle design, including improvements in gear systems and frame geometry, ultimately leading to the modern bicycles we see today. The understanding of bicycle evolution highlights the importance of technology and design in enhancing human transportation methods. These innovations paved the way for the popularity of cycling in the 19th century and beyond.

In contrast, the other options represent years that are not associated with the invention of the pedal drive bicycle. For example, 1800 predates the actual development, while 1865 and 1901 came after the significant breakthrough in 1839.