Final answer:
Travel played a significant role in the development and spread of Petrarch's influence by bringing knowledge and cultural influences from ancient Greece and Rome. Humanist scholars sought out ancient manuscripts, contributing to the revival of classical knowledge and the growth of humanism. Travel narratives and journals provided insights into the challenges faced by travelers.
Step-by-step explanation:
Travel played a significant role in the development and spread of Petrarch's influence during the Renaissance. The Italian trade routes and the migration of Byzantine scholars to Italy brought knowledge and cultural influences from ancient Greece and Rome. Humanist scholars like Petrarch sought out ancient manuscripts and writings, which contributed to the revival of classical knowledge and the growth of humanism. Additionally, travel narratives and journals provided valuable insights into the conditions and challenges faced by travelers.