According to the traditional Islamic view, the Qur'an (Koran) began with revelations to Muhammad by the angel Gabriel in 610. The history of the Qur'an began when its verses were revealed to the Muhammad. The rise of Islam began around the time Muslims took flight in the Hijra, moving to Medina.
Caravans were used for a. building the pyramids. c. invading other countries. b. overland trade. d. worshipping the sun. Caravans were used for overland trade.
The main purpose of the roads were to hold the Empire together and create a network of communication and stability. Today, roads and bridges are still used; however, the Inca region has became advanced with railroads. Trains are used mostly for the tourist that come and visit Peru and Columbia.n contrast, stone was laid over the roads and canals for wet areas.The Inca road system was highly used in the Inca state and often used to move government messengers, Inca armies, royal litters, or state trade caravans.