The Mughals ruled over a large part of India. Ruling such a large landmass was never possible without proper infrastructure, especially roads. The roads were used to move large Mughal armies across the nation swiftly lugging the artillery which usually was heavy and was towed by the bullock carts and elephant carts. There are many old Mughal-time Dharamshalas and Mughalsarai in Agra. https://www.tajwithguide.com/blog/the-mughal-sarai-in-agra/