How did the alps and Apennines mountains cause difficulty for travelers in Italy?

The Alps were a major barrier for travelers in Italy due to their rugged terrain and high elevations. The mountain passes through the Alps were often treacherous and difficult to navigate, especially during the winter months when snow and ice made travel even more dangerous. The highest pass through the Alps is the Col de l'Iseran, which is located at an altitude of 2,770 meters (9,088 feet).

Apennines:

The Apennines also posed challenges for travelers in Italy, although they were generally not as difficult to traverse as the Alps. The Apennines are a long and narrow mountain range that runs the length of the Italian peninsula, and they divide Italy into two distinct regions: the northern and southern regions. The highest peak in the Apennines is Mount Corno Grande, which is located at an altitude of 2,912 meters (9,554 feet).