* Early Settlers: The most likely "pedestrians" were early settlers who journeyed westward. They brought apple seeds with them, often planting them near their homes or along trails for future generations. This practice helped to establish apple trees across the continent.
* Native Americans: Some Native American tribes also cultivated apple trees, either through trade with European settlers or through their own practices of planting trees for future generations.
* Natural Dispersal: Apples, like many other fruit trees, can be dispersed by animals eating the fruit and carrying the seeds. This could have contributed to the spread of apple trees throughout the wilderness, particularly in areas with wild animals.
No Single "Pedestrian": It's important to note that there's no single, well-documented individual who planted apple trees across the entire American wilderness. It was a gradual process over many years, driven by various factors, including the efforts of settlers, Native Americans, and natural processes.